New Release: Tor Browser 10.0a5

by sysrqb | August 19, 2020

[Update 8/20/2020 13:05 UTC]: We encountered updater issues for all alpha users that have been auto-updating the alpha series for months. We changed the accepted MAR channel ID to torbrowser-torproject-alpha as we are on an alpha channel. The assumption was that enough time passed since we changed it last time to torbrowser-torproject-release,torbrowser-torproject-alpha but it turns out that change did not get applied for yet unknown reasons. Bug 40092 is tracking the bug. Workaround: change the torbrowser-torproject-release in your update-settings.ini (in the Browser's code directory, which depends on you operating system) file to torbrowser-torproject-alpha and the update should get applied successfully. Alternatively, downloading a fresh alpha copy of Tor Browser works as well. Sorry for the inconvenience.

[Update 8/21/2020 02:45 UTC]: Please provide steps to reproduce errors when reporting them. Thank you for all of the reports so far.

Tor Browser 10.0a5 is now available from the Tor Browser Alpha download page and also from our distribution directory.

Note: This is an alpha release, an experimental version for users who want to help us test new features. For everyone else, we recommend downloading the latest stable release instead.

We are happy to announce the first alpha for desktop users based on Firefox 78 ESR. The Android version is under active development and will be available in the coming weeks.

We announced nightly builds based on ESR 78 a while ago and used the time since then to adjust our toolchains, finish our proxy audit, and fix a lot of issues that came down on us due to the switch to this new major Firefox version on the ESR channel.

Tor Browser 10.0a5 ships with Firefox 78.1.0esr but there are a lot more changes that we included compared to the previous alpha version. As it is the first alpha based on the new major ESR version we expect more bugs than usual. Please report them, either here or on Gitlab, or essentially with any other means that would reach us. We are in particular interested in potential proxy bypasses which our proxy audit missed.

The full changelog since Tor Browser 10.0a4 is:

  • Windows + OS X + Linux
    • Update Firefox to 78.1.0esr
    • Update Tor to 0.4.4.4-rc
    • Update Tor Launcher to 0.2.22
      • Bug 32174: Replace XUL <textbox> with <html:input></li>
      • Bug 33890: Rename XUL files to XHTML
      • Bug 33862: Fix usages of createTransport API
      • Bug 33906: Fix Tor-Launcher issues for Firefox 75
      • Bug 33998: Use CSS grid instead of XUL grid
      • Bug 34164: Tor Launcher deadlocks during startup (Firefox 77)
      • Bug 34206: Tor Launcher button labels are missing (Firefox 76)
    • Translations update
    • Update NoScript to 11.0.37
    • Bug 11154: Disable TLS 1.0 (and 1.1) by default
    • Bug 16931: Sanitize the add-on blocklist update URL
    • Bug 17374: Disable 1024-DH Encryption by default
    • Bug 30682: Disable Intermediate CA Preloading
    • Bug 30812: Exempt about: pages from Resist Fingerprinting
    • Bug 31918 + 33533 + 40024 + 40037: Rebase Tor Browser esr68 patches for ESR 78
    • Bug 32612: Update MAR_CHANNEL_ID for the alpha
    • Bug 32886: Separate treatment of @media interaction features for desktop and android
    • Bug 33534: Review FF release notes from FF69 to latest (FF78)
    • Bug 33697: Use old search config based on list.json
    • Bug 33721: PDF Viewer is not working in the safest security level
    • Bug 33734: Set MOZ_NORMANDY to False
    • Bug 33737: Fix aboutDialog.js error for Firefox nightlies
    • Bug 33848: Disable Enhanced Tracking Protection
    • Bug 33851: Patch out Parental Controls detection and logging
    • Bug 33852: Clean up about:logins to not mention Sync
    • Bug 33856: Set browser.privatebrowsing.forceMediaMemoryCache to True
    • Bug 33862: Fix usages of createTransport API
    • Bug 33867: Disable password manager and password generation
    • Bug 33890: Rename XUL files to XHTML
    • Bug 33892: Add brandProductName to brand.dtd and brand.properties
    • Bug 33962: Uplift patch for bug 5741 (dns leak protection)
    • Bug 34125: API change in protocolProxyService.registerChannelFilter
    • Bug 40001: Generate tor-browser-brand.ftl when importing translations
    • Bug 40002: Fix generateNSGetFactory being moved to ComponentUtils
    • Bug 40003: Adapt code for L10nRegistry API changes
    • Bug 40005: Initialize the identity UI before setting up the circuit display
    • Bug 40016: Update Snowflake to discover NAT type
    • Bug 40017: Audit Firefox 68-78 diff for proxy issues
    • Bug 40022: Update new icons in Tor Browser branding
    • Bug 40025: Revert add-on permissions due to Mozilla's 1560059
    • Bug 40036: Remove product version/update channel from #13379 patch
    • Bug 40038: Review RemoteSettings for ESR 78
    • Bug 40048: Disable various ESR78 features via prefs
    • Bug 40059: Verify our external helper patch is still working
    • Bug 40066: Update existing prefs for ESR 78 [tor-browser]
    • Bug 40073: Disable remote Public Suffix List fetching
    • Bug 40078: Backport patches for bug 1651680 for now
    • Translations update
  • Windows
    • Bug 33855: Don't use site's icon as window icon in Windows in private mode
    • Bug 40061: Omit the Windows default browser agent from the build
  • OS X
    • Bug 32252: Tor Browser does not display correctly in VMWare Fusion on macOS (mojave)
  • Build System
    • Windows + OS X + Linux
      • Bug 31845: Bump GCC version to 9.3.0
      • Bug 34011: Bump clang to 9.0.1
      • Bug 34014: Enable sqlite3 support in Python
      • Bug 34390: Don't copy DBM libraries anymore
      • Bug 34391: Remove unused --enable-signmar option
      • Bug 40004: Adapt Rust project for Firefox 78 ESR [tor-browser-build]
      • Bug 40005: Adapt Node project for Firefox 78 ESR [tor-browser-build]
      • Bug 40006: Adapt cbindgen for Firefox 78 ESR [tor-browser-build]
      • Bug 40037: Move projects over to clang-source [tor-browser-build]
      • Bug 40026: Fix full .mar creation for esr78 [tor-browser-build]
      • Bug 40027: Fix incremental .mar creation for esr78 [tor-browser-build]
      • Bug 40028: Do not reference unset env variables [tor-browser-build]
    • Windows
    • OS X
      • Bug 34229: Update macOS toolchain for Firefox 78 ESR
      • Bug 40003: Update cctools version for Firefox 78 ESR
      • Bug 40018: Add libtapi project for cctools
      • Bug 40019: Ship our own runtime library for macOS
    • Linux
      • Bug 34359: Adapt abicheck.cc to deal with newer GCC version
      • Bug 34386: Fix up clang compilation on Linux

Comments

Please note that the comment area below has been archived.

Anonymous (not verified) said:

August 19, 2020

Permalink

Win10x64:
PATCH DIRECTORY C:\Tor Browser\Browser\TorBrowser\UpdateInfo\updates\0
INSTALLATION DIRECTORY C:\Tor Browser\Browser
WORKING DIRECTORY C:\Tor Browser\Browser
NS_main: callback app file open attempt 1 failed. File: C:\Tor Browser\Browser\firefox.exe. Last error: 32
failed: 22
calling QuitProgressUI

Do you have steps to reproduce this issue? I just used a clean 10.0a4 on a Windows 10 computer and successfully updated to 10.0a5. Which alpha are you updating from? Or maybe you modify your Tor Browser to update to the alpha? Does it work if you are not on a priviledged place like c:\ with your Tor Browser but instead, say, in your home directory?

Error 22 means a mismatching update channel.

Anonymous (not verified) said:

August 20, 2020

Permalink

> Do you have steps to reproduce this issue?
Automatic updates since 9.5a1.
> Which alpha are you updating from?
10.0a4
> Or maybe you modify your Tor Browser to update to the alpha?
How so?
> Does it work if you are not on a privileged place like c:\ with your Tor Browser but instead, say, in your home directory?
Admin account.
> Error 22 means a mismatching update channel.
Maybe, it is wrong. What does "Last error: 32" mean?

That's an error related to the Windows maintenance service. In particular `SERVICE_COULD_NOT_LOCK_UPDATER`. We disabled the maintenance service which should not be running. [EDIT: actually, I am wrong here. This comes from `GetLastError()` which is a Windows API. Not sure what "32" means in that context but it's nothing updater related. Thanks to mcs for educating me.]

FWIW: I was not asking about whether you run it as admin or not but that is a good question, too. What does happen if you install Tor Browser as a normal user and then update (at a location the user can write to)?

Anonymous (not verified) said:

August 20, 2020

Permalink

I was almost sure it's you bug. And that's it:
update-settings.ini
ACCEPTED_MAR_CHANNEL_IDS=torbrowser-torproject-release
Updater didn't update it. Updating started from 9.0a6.
torbrowser-install-win64-10.0a4_en-US.exe is updated without problems, because it has
ACCEPTED_MAR_CHANNEL_IDS=torbrowser-torproject-alpha,torbrowser-torproject-release

Not sure whom you mean with "you", but yes, if you have an alpha which still has `ACCEPTED_MAR_CHANNEL_IDS=torbrowser-torproject-release` then that won't work anymore. You need a more recent alpha to update from.

Anonymous (not verified) said:

August 20, 2020

Permalink

This is a 10.4a autoupdated sequentially started from clean 9.0a6, unmodified. Why updater doesn't update `ACCEPTED_MAR_CHANNEL_IDS=torbrowser-torproject-release` is what this bug is about. I just replaced it from the clean 10.0a4 and update finished successfully.

Anonymous (not verified) said:

August 20, 2020

Permalink

addons.xpi WARN Exception running bootstrap method update on ddg@search.mozilla.org: TypeError: oldOptionalPermissions is undefined(resource://gre/modules/Extension.jsm:773:1) JS Stack trace: migratePermissions@Extension.jsm:773:1
awaitPromise@XPIProvider.jsm:228:15
processFileChanges@XPIDatabase.jsm:3318:19
checkForChanges@XPIProvider.jsm:3025:55
startup@XPIProvider.jsm:2485:12
callProvider@AddonManager.jsm:214:31
_startProvider@AddonManager.jsm:585:17
startup@AddonManager.jsm:831:14
startup@AddonManager.jsm:3486:26
observe@addonManager.js:87:29

Anonymous (not verified) said:

August 20, 2020

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Error: Can't find profile directory. XULStore.jsm:66:15
load resource://gre/modules/XULStore.jsm:66
XULStore resource://gre/modules/XULStore.jsm:24

Anonymous (not verified) said:

August 20, 2020

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[Exception... "Component returned failure code: 0x80520001 (NS_ERROR_FILE_UNRECOGNIZED_PATH) [nsIXPCComponents_Utils.readUTF8URI]" nsresult: "0x80520001 (NS_ERROR_FILE_UNRECOGNIZED_PATH)" location: "JS frame :: resource://gre/modules/L10nRegistry.jsm :: L10nRegistry.loadSync :: line 661" data: no] L10nRegistry.jsm:661:19
loadSync resource://gre/modules/L10nRegistry.jsm:661
fetchFile resource://gre/modules/L10nRegistry.jsm:576
generateResourceSetSync resource://gre/modules/L10nRegistry.jsm:480
map self-hosted:240
generateResourceSetSync resource://gre/modules/L10nRegistry.jsm:475
generateResourceSetsForLocaleSync resource://gre/modules/L10nRegistry.jsm:417
next self-hosted:1099
generateResourceSetsForLocaleSync resource://gre/modules/L10nRegistry.jsm:426
next self-hosted:1099
generateResourceSetsForLocaleSync resource://gre/modules/L10nRegistry.jsm:426
next self-hosted:1099
generateResourceSetsForLocaleSync resource://gre/modules/L10nRegistry.jsm:426
next self-hosted:1099
generateResourceSetsForLocaleSync resource://gre/modules/L10nRegistry.jsm:426
next self-hosted:1099
generateResourceSetsForLocaleSync resource://gre/modules/L10nRegistry.jsm:426
next self-hosted:1099
generateResourceSetsForLocaleSync resource://gre/modules/L10nRegistry.jsm:426
next self-hosted:1099
generateResourceSetsForLocaleSync resource://gre/modules/L10nRegistry.jsm:426
next self-hosted:1099
generateResourceSetsForLocaleSync resource://gre/modules/L10nRegistry.jsm:426
next self-hosted:1099
generateResourceSetsForLocaleSync resource://gre/modules/L10nRegistry.jsm:426
next self-hosted:1099
generateResourceSetsForLocaleSync resource://gre/modules/L10nRegistry.jsm:426
next self-hosted:1099
generateResourceSetsForLocaleSync resource://gre/modules/L10nRegistry.jsm:426
next self-hosted:1099
generateResourceSetsForLocaleSync resource://gre/modules/L10nRegistry.jsm:426
next self-hosted:1099
generateResourceSetsForLocaleSync resource://gre/modules/L10nRegistry.jsm:426
next self-hosted:1099
generateResourceSetsForLocaleSync resource://gre/modules/L10nRegistry.jsm:426
next self-hosted:1099
generateBundlesSync resource://gre/modules/L10nRegistry.jsm:177
next self-hosted:1099
next resource://gre/modules/Localization.jsm:147
formatWithFallbackSync resource://gre/modules/Localization.jsm:356
formatMessagesSync resource://gre/modules/Localization.jsm:417

Anonymous (not verified) said:

August 20, 2020

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TypeError: window.RFPHelper is undefined RFPHelperParent.jsm:29:7
receiveMessage resource:///actors/RFPHelperParent.jsm:29

anon (not verified) said:

August 20, 2020

Permalink

Automatic in-app updates from 10.0a4 are consistently failing on Windows 10 and there are no administrator privileges involved. Restarting Tor Browser continues to run 10.0a4. I had to manually download and update to 10.0a5.

Anonymous (not verified) said:

August 20, 2020

Permalink

Error: TelemetryStopwatch: key "WEBEXT_CONTENT_SCRIPT_INJECTION_MS" was already initialized ExtensionTelemetry.jsm:109:31
Error: TelemetryStopwatch: key "WEBEXT_CONTENT_SCRIPT_INJECTION_MS_BY_ADDONID" was already initialized ExtensionTelemetry.jsm:113:41
Error: TelemetryStopwatch: requesting elapsed time for nonexisting stopwatch. Histogram: "WEBEXT_CONTENT_SCRIPT_INJECTION_MS", key: "" ExtensionTelemetry.jsm:109:31
Error: TelemetryStopwatch: requesting elapsed time for nonexisting stopwatch. Histogram: "WEBEXT_CONTENT_SCRIPT_INJECTION_MS_BY_ADDONID", key: "

Anonymous (not verified) said:

August 20, 2020

Permalink

TypeError: wgc is null ExtensionCommon.jsm:501:19
openConduit resource://gre/modules/ExtensionCommon.jsm:501
ChildAPIManager resource://gre/modules/ExtensionChild.jsm:844
resource://gre/modules/ExtensionContent.jsm:971
get resource://gre/modules/ExtensionCommon.jsm:158
ContentScriptContextChild resource://gre/modules/ExtensionContent.jsm:866
get resource://gre/modules/ExtensionCommon.jsm:158
ContentScriptContextChild resource://gre/modules/ExtensionContent.jsm:870
get resource://gre/modules/Schemas.jsm:192
moz-extension://6d79e392-962a-17d4-b1bc-924b616e9e9d/lib/browser-polyfill.js:22
moz-extension://6d79e392-962a-17d4-b1bc-924b616e9e9d/lib/browser-polyfill.js:10
moz-extension://6d79e392-962a-17d4-b1bc-924b616e9e9d/lib/browser-polyfill.js:13
inject resource://gre/modules/ExtensionContent.jsm:567
AsyncFunctionNext self-hosted:693
uncaught exception: ObjectTypeError: wgc is null ExtensionCommon.jsm:501:19
openConduit resource://gre/modules/ExtensionCommon.jsm:501
ChildAPIManager resource://gre/modules/ExtensionChild.jsm:844
resource://gre/modules/ExtensionContent.jsm:971
get resource://gre/modules/ExtensionCommon.jsm:158
ContentScriptContextChild resource://gre/modules/ExtensionContent.jsm:866
get resource://gre/modules/ExtensionCommon.jsm:158
ContentScriptContextChild resource://gre/modules/ExtensionContent.jsm:870
get resource://gre/modules/Schemas.jsm:192
moz-extension://6d79e392-962a-17d4-b1bc-924b616e9e9d/lib/browser-polyfill.js:22
moz-extension://6d79e392-962a-17d4-b1bc-924b616e9e9d/lib/browser-polyfill.js:10
moz-extension://6d79e392-962a-17d4-b1bc-924b616e9e9d/lib/browser-polyfill.js:13
inject resource://gre/modules/ExtensionContent.jsm:567
AsyncFunctionNext self-hosted:693
uncaught exception: Object

Anonymous (not verified) said:

August 20, 2020

Permalink

[fluent-dom] An element named "community-mozillaLink" wasn't found in the source. aboutDialog.xhtml
[fluent-dom] An element named "community-creditsLink" wasn't found in the source. aboutDialog.xhtml
[fluent-dom] An element named "helpus-donateLink" wasn't found in the source. aboutDialog.xhtml
[fluent-dom] An element named "helpus-getInvolvedLink" wasn't found in the source. aboutDialog.xhtml

Anonymous (not verified) said:

August 20, 2020

Permalink

NS_ERROR_FAILURE: Ignore PDF.js for this download. PdfStreamConverter.jsm:1130
getConvertedType resource://pdf.js/PdfStreamConverter.jsm:1130

Anonymous (not verified) said:

August 20, 2020

Permalink

InvalidStateError: An attempt was made to use an object that is not, or is no longer, usable 2 FaviconLoader.jsm:568

Anonymous (not verified) said:

August 20, 2020

Permalink

TypeError: PrecompiledScript.executeInGlobal: Argument 1 is not an object. ExtensionContent.jsm:567:25
target is null MessageManagerProxy.jsm:171
addListeners resource://gre/modules/MessageManagerProxy.jsm:171
MessageManagerProxy resource://gre/modules/MessageManagerProxy.jsm:34
ProxyContextParent resource://gre/modules/ExtensionParent.jsm:583
ContentScriptContextParent resource://gre/modules/ExtensionParent.jsm:669
recvCreateProxyContext resource://gre/modules/ExtensionParent.jsm:907
recvCreateProxyContext self-hosted:844
_recv resource://gre/modules/ConduitsChild.jsm:78
receiveMessage resource://gre/modules/ConduitsParent.jsm:333
sender.tab is undefined MessageChannel.jsm:1019
promise resource://gre/modules/MessageChannel.jsm:1019
WebExtension context not found! ExtensionParent.jsm:1113
getContextById resource://gre/modules/ExtensionParent.jsm:1113
recvRemoveListener resource://gre/modules/ExtensionParent.jsm:1092
recvRemoveListener self-hosted:844
_recv resource://gre/modules/ConduitsChild.jsm:78
receiveMessage resource://gre/modules/ConduitsParent.jsm:333

Anonymous (not verified) said:

August 20, 2020

Permalink

Uncaught TypeError: aSubject is null
observe chrome://browser/content/pageinfo/permissions.js:25
torbutton_do_new_identity chrome://torbutton/content/torbutton.js:922
torbutton_new_identity chrome://torbutton/content/torbutton.js:791
oncommand chrome://browser/content/browser.xhtml:1
permissions.js:25:24
observe chrome://browser/content/pageinfo/permissions.js:25
torbutton_do_new_identity chrome://torbutton/content/torbutton.js:922
torbutton_new_identity chrome://torbutton/content/torbutton.js:791
oncommand chrome://browser/content/browser.xhtml:1

Anonymous (not verified) said:

August 20, 2020

Permalink

TypeError: state is undefined BrowserElementParent.jsm:314:25
_transitionFrameState resource://gre/actors/BrowserElementParent.jsm:314
receiveMessage resource://gre/actors/BrowserElementParent.jsm:61

Usually when I encounter places with a "strong ideological bent" against anonymity I think they actually support anonymity, but only for governments, corporations and forum shills.

Anonymous (not verified) said:

August 20, 2020

Permalink

NS_ERROR_XPC_SECURITY_MANAGER_VETO: 2 browsing-context.js:914
_notifyDocShellDestroy resource://devtools/server/actors/targets/browsing-context.js:914
_onDocShellDestroy resource://devtools/server/actors/targets/browsing-context.js:808
observe resource://devtools/server/actors/targets/browsing-context.js:771
observe resource://devtools/server/actors/targets/parent-process.js:106

Anonymous (not verified) said:

August 21, 2020

Permalink

when moving a tab (about:support):
Uncaught TypeError: event.target.classList is undefined
on_mouseover chrome://browser/content/tabbrowser-tab.js:288
handleEvent chrome://global/content/customElements.js:466
tabbrowser-tab.js:288:11
on_mouseover chrome://browser/content/tabbrowser-tab.js:288
handleEvent chrome://global/content/customElements.js:466

answer (not verified) said:

August 22, 2020

Permalink

'Join the discussion' in https://vbdvexcmqi.oedi.net/new-release-tor-browser-953 is off, so i try it here:

https://vbdvexcmqi.oedi.net/comment/288996#comment-288996
wtf (not verified) said:
Enterprise Policies are botched?
All Updates in Enterprise Policies are off but HTTSEverywhere tries downloading new rulesets?
https://vbdvexcmqi.oedi.net/comment/289110#comment-289110
"sysrqb answering: HTTPS-Everywhere is not controlled by Enterprise Policies."

Funny. Question: what is "ExtensionUpdate Enable or disable automatic extension updates. / DisableSystemAddonUpdate Prevent the browser from installing and updating system add-ons."(about:policies#documentation)?

Further HTTPS-Everywhere updating with "Auto-update rulesets'"(HTTPSEverywhere menu) off and "Update Add-ons Automatically"(`about:addons`) unchecked!
Maybe(?) it has to do with -safe- deleting temporary files(.sql) after closing TBB.
This is new, DEFINITELY noseen in Firefox 68esr AND TBB unique!

NoScript!!! (not verified) said:

August 24, 2020

Permalink

What happened to NoScript? I can't enable only the javascript from the domain I'm visiting. The only way to get JS now is to accept all JS. Someone please FIX, this is a fingerprinting and profile building nightmare!

Joe (not verified) said:

August 24, 2020

Permalink

Colors still broken. Have been since late v7, early v8.
To reproduce (windows machine, currently w10-x64-pro but w7-64-pro did the same), change your system colors if they aren't already (my example: background is dark green, text is pale yellow). In win-10 this doesn't do anything unless you set your theme to a "high-contrast" setting.
Next, tell the tor browser (options->colors->use-system) to accept the System's color choices. Try toggling the "always use" setting if you like. Nothing happens. Nothing has happened for a few years now and I can't use TOR without welding goggles. This is frustrating beyond measure.

Anonymous (not verified) said:

August 24, 2020

Permalink

During NI:
TypeError: this.document.location is null PurgeSessionHistoryChild.jsm:29:9
receiveMessage resource://gre/actors/PurgeSessionHistoryChild.jsm:29

Anonymous (not verified) said:

August 24, 2020

Permalink

Tor has problems after hibernation, many connections time out, and:
Tor NOTICE: No circuits are opened. Relaxed timeout for circuit 306 (a Measuring circuit timeout 3-hop circuit in state waiting to see how other guards perform with channel state open) to 118750ms. However, it appears the circuit has timed out anyway.

Anonymous (not verified) said:

August 25, 2020

Permalink

Sometimes Tor Browser corrupts headers (esr68 too):
Invalid header array: [{name:"server", value:"nginx"}, {name:"date", value:"Tue, 25 Aug 2020 09:51:45 GMT"}, {name:"content-type", value:"text/html; charset=UTF-8"}, {name:"last-modified", value:"Sat, 06 Jun 2020 03:06:30 GMT"}, {name:"vary", value:"Accept-Encoding"}, {name:"etag", value:"W/\"5edb0836-21c\""}, {name:"strict-transport-security", value:"max-age=31536000"}, {name:"x-frame-options", value:"SAMEORIGIN"}, {name:"x-xss-protection", value:"1;mode=block"}, {name:"x-content-type-options", value:"nosniff"}, {name:"referrer-policy", value:"origin"}, {name:"expect-ct", value:"max-age=0"}, {name:"expires", value:"Wed, 26 Aug 2020 09:51:45 GMT"}, {name:"cache-control", value:"max-age=86400"}, {name:"x-duckduckgo-locale", value:"en_US"}, {name:"content-encoding", value:"br"}, {name:"X-Firefox-Spdy", value:"h2"}, {name:"content-security-policy", value:"noscript-marker;media-src http:"}, (void 0)] WebRequest.jsm:122
applyChanges resource://gre/modules/WebRequest.jsm:122
applyChanges resource://gre/modules/WebRequest.jsm:1060
AsyncFunctionNext self-hosted:693