Feedback Link in Firefox 57 Throws Unhandled Promise Rejection

[Jason Tolotta]

Everytime I try to give feedback in Firefox via the link on the page edit screen the following error occurs.

I am using a modified users.js file.

Does anyone know the Firefox preference to prevent this error?

Unhandled promise rejection 
TypeError: NetworkError when attempting to fetch resource.
es6.promise.js:117
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es6.promise.js:117
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es6.promise.js:59
T/<
es6.promise.js:111
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setImmediate.js:40
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setImmediate.js:69
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setImmediate.js:109  

[Shannon S]

Jason,

Can you let us know what changes you made to your users.js file? I can confirm the error does not occur when using FIrefox 57 out-of-the-box.

Regards,

Shannon

[Jason Tolotta]

I use a modified ghacks users.js file below.

user_pref("_user.js.parrot", "START: Oh yes, the Norwegian Blue... what's wrong with it?");
user_pref("_user.js.parrot", "0100 syntax error: the parrot's dead!");
user_pref("browser.slowStartup.notificationDisabled", true);
user_pref("browser.slowStartup.maxSamples", 0);
user_pref("browser.slowStartup.samples", 0);
user_pref("browser.rights.3.shown", true);
user_pref("browser.startup.homepage_override.mstone", "ignore");
user_pref("startup.homepage_welcome_url", "");
user_pref("startup.homepage_welcome_url.additional", "");
user_pref("startup.homepage_override_url", ""); // what's new page after updates
user_pref("browser.laterrun.enabled", false);
user_pref("browser.shell.checkDefaultBrowser", false);
user_pref("_user.js.parrot", "0200 syntax error: the parrot's definitely deceased!");
user_pref("browser.search.countryCode", "US"); // (hidden pref)
user_pref("browser.search.region", "US"); // (hidden pref)
user_pref("browser.search.geoip.url", "");
user_pref("intl.locale.matchOS", false);
user_pref("general.useragent.locale", "en-US");
user_pref("browser.search.geoSpecificDefaults", false);
user_pref("browser.search.geoSpecificDefaults.url", "");
user_pref("intl.accept_languages", "en-US, en");
user_pref("javascript.use_us_english_locale", true); // (hidden pref)
user_pref("intl.regional_prefs.use_os_locales", false);
user_pref("geo.wifi.uri", "https://location.services.mozilla.com/v1/geolocate?key=%MOZILLA_API_KEY%");
user_pref("_user.js.parrot", "0300 syntax error: the parrot's not pinin' for the fjords!");
user_pref("app.update.auto", false);
user_pref("extensions.update.autoUpdateDefault", false);
user_pref("app.update.service.enabled", false);
user_pref("app.update.staging.enabled", false);
user_pref("app.update.silent", false);
user_pref("extensions.getAddons.cache.enabled", false);
user_pref("lightweightThemes.update.enabled", false);
user_pref("browser.search.update", false);
user_pref("dom.ipc.plugins.flash.subprocess.crashreporter.enabled", false);
user_pref("dom.ipc.plugins.reportCrashURL", false);
user_pref("extensions.getAddons.showPane", false); // hidden pref
user_pref("extensions.webservice.discoverURL", "");
user_pref("toolkit.telemetry.unified", false);
user_pref("toolkit.telemetry.enabled", false); // see [NOTE] above FF58+
user_pref("toolkit.telemetry.server", "");
user_pref("toolkit.telemetry.archive.enabled", false);
user_pref("toolkit.telemetry.cachedClientID", "");
user_pref("toolkit.telemetry.newProfilePing.enabled", false); // (FF55+)
user_pref("toolkit.telemetry.shutdownPingSender.enabled", false); // (FF55+)
user_pref("toolkit.telemetry.updatePing.enabled", false); // (FF56+)
user_pref("toolkit.telemetry.bhrPing.enabled", false); // (FF57+) Background Hang Reporter
user_pref("toolkit.telemetry.firstShutdownPing.enabled", false); // (FF57+)
user_pref("datareporting.healthreport.uploadEnabled", false);
user_pref("datareporting.healthreport.about.reportUrl", "data:text/plain,");
user_pref("datareporting.policy.dataSubmissionEnabled", false);
user_pref("breakpad.reportURL", "");
user_pref("browser.tabs.crashReporting.sendReport", false);
user_pref("browser.crashReports.unsubmittedCheck.enabled", false); // (FF51+)
user_pref("browser.crashReports.unsubmittedCheck.autoSubmit", false); // (FF51+)
user_pref("browser.newtab.preload", false);
user_pref("browser.newtabpage.directory.source", "data:text/plain,");
user_pref("browser.newtabpage.enabled", false);
user_pref("browser.newtabpage.enhanced", false);
user_pref("browser.newtabpage.introShown", true);
user_pref("browser.aboutHomeSnippets.updateUrl", "https://127.0.0.1");
user_pref("_user.js.parrot", "0400 syntax error: the parrot's passed on!");
user_pref("extensions.blocklist.enabled", true);
user_pref("extensions.blocklist.url", "https://blocklists.settings.services.mozilla.com/v1/blocklist/3/%APP_ID%/%APP_VERSION%/");
user_pref("services.blocklist.update_enabled", true);
user_pref("services.blocklist.signing.enforced", true);
user_pref("browser.safebrowsing.downloads.remote.enabled", false);
user_pref("browser.safebrowsing.downloads.remote.url", "");
user_pref("browser.safebrowsing.provider.google.reportURL", "");
user_pref("browser.safebrowsing.reportPhishURL", "");
user_pref("browser.safebrowsing.provider.google4.reportURL", ""); // (FF50+)
user_pref("browser.safebrowsing.provider.google.reportMalwareMistakeURL", ""); // (FF54+)
user_pref("browser.safebrowsing.provider.google.reportPhishMistakeURL", ""); // (FF54+)
user_pref("browser.safebrowsing.provider.google4.reportMalwareMistakeURL", ""); // (FF54+)
user_pref("browser.safebrowsing.provider.google4.reportPhishMistakeURL", ""); // (FF54+)
user_pref("privacy.trackingprotection.ui.enabled", true);
user_pref("_user.js.parrot", "0500 syntax error: the parrot's cashed in 'is chips!");
user_pref("experiments.enabled", false);
user_pref("experiments.manifest.uri", "");
user_pref("experiments.supported", false);
user_pref("experiments.activeExperiment", false);
user_pref("network.allow-experiments", false);
user_pref("browser.ping-centre.telemetry", false);
user_pref("extensions.pocket.enabled", false);
user_pref("dom.flyweb.enabled", false);
user_pref("extensions.shield-recipe-client.enabled", false);
user_pref("extensions.shield-recipe-client.api_url", "");
user_pref("browser.newtabpage.activity-stream.enabled", false);
user_pref("browser.library.activity-stream.enabled", false); // (FF57+)
user_pref("browser.onboarding.enabled", false);
user_pref("extensions.formautofill.addresses.enabled", false);
user_pref("extensions.formautofill.available", "off"); // (FF56+)
user_pref("extensions.formautofill.creditCards.enabled", false); // (FF56+)
user_pref("extensions.formautofill.heuristics.enabled", false);
user_pref("extensions.webcompat-reporter.enabled", false);
user_pref("_user.js.parrot", "0600 syntax error: the parrot's no more!");
user_pref("network.prefetch-next", false);
user_pref("network.dns.disablePrefetch", true);
user_pref("network.dns.disablePrefetchFromHTTPS", true); // (hidden pref)
user_pref("network.predictor.enabled", false);
user_pref("captivedetect.canonicalURL", "");
user_pref("network.captive-portal-service.enabled", false); // (FF52+)
user_pref("network.http.speculative-parallel-limit", 0);
user_pref("browser.send_pings", false);
user_pref("browser.send_pings.require_same_host", true);
user_pref("network.protocol-handler.external.ms-windows-store", false);
user_pref("network.predictor.enable-prefetch", false);
user_pref("_user.js.parrot", "0900 syntax error: the parrot's expired!");
user_pref("security.ask_for_password", 2);
user_pref("security.password_lifetime", 5);
user_pref("signon.autofillForms", false);
user_pref("signon.storeWhenAutocompleteOff", true);
user_pref("security.insecure_password.ui.enabled", true);
user_pref("browser.fixup.hide_user_pass", true);
user_pref("signon.formlessCapture.enabled", false);
user_pref("signon.autofillForms.http", false);
user_pref("security.insecure_field_warning.contextual.enabled", true);
user_pref("network.auth.subresource-img-cross-origin-http-auth-allow", false);
user_pref("_user.js.parrot", "1100 syntax error: the parrot's bought the farm!");
user_pref("browser.tabs.remote.separateFileUriProcess", true);
user_pref("dom.ipc.shims.enabledWarnings", true);
user_pref("browser.tabs.remote.allowLinkedWebInFileUriProcess", false);
user_pref("_user.js.parrot", "1700 syntax error: the parrot's bit the dust!");
user_pref("_user.js.parrot", "1800 syntax error: the parrot's pushing up daisies!");
user_pref("plugin.default.state", 0);
user_pref("plugin.defaultXpi.state", 0);
user_pref("plugins.click_to_play", true);
user_pref("plugin.sessionPermissionNow.intervalInMinutes", 0);
user_pref("security.xpconnect.plugin.unrestricted", false);
user_pref("plugin.scan.plid.all", false);
user_pref("media.gmp-provider.enabled", false);
user_pref("media.gmp.trial-create.enabled", false);
user_pref("media.gmp-manager.url", "data:text/plain,");
user_pref("media.gmp-manager.url.override", "data:text/plain,"); // (hidden pref)
user_pref("media.gmp-manager.updateEnabled", false); // disable local fallback (hidden pref)
user_pref("media.gmp-widevinecdm.visible", false);
user_pref("media.gmp-widevinecdm.enabled", false);
user_pref("media.gmp-widevinecdm.autoupdate", false);
user_pref("media.eme.enabled", false); // Options>Content>Play DRM Content
user_pref("browser.eme.ui.enabled", false); // hides "Play DRM Content" checkbox, restart required
user_pref("media.gmp-gmpopenh264.enabled", false); // (hidden pref)
user_pref("media.gmp-gmpopenh264.autoupdate", false);
user_pref("_user.js.parrot", "2000 syntax error: the parrot's snuffed it!");
user_pref("media.peerconnection.enabled", false);
user_pref("media.peerconnection.use_document_iceservers", false);
user_pref("media.peerconnection.video.enabled", false);
user_pref("media.peerconnection.identity.enabled", false);
user_pref("media.peerconnection.identity.timeout", 1);
user_pref("media.peerconnection.turn.disable", true);
user_pref("media.peerconnection.ice.tcp", false);
user_pref("media.navigator.video.enabled", false); // video capability for WebRTC
user_pref("media.peerconnection.ice.default_address_only", true); // (FF42-FF50)
user_pref("media.peerconnection.ice.no_host", true); // (FF51+)
user_pref("webgl.disabled", true);
user_pref("pdfjs.enableWebGL", false);
user_pref("webgl.min_capability_mode", true);
user_pref("webgl.disable-extensions", true);
user_pref("webgl.disable-fail-if-major-performance-caveat", true);
user_pref("webgl.enable-debug-renderer-info", false);
user_pref("webgl.dxgl.enabled", false); // [WINDOWS]
user_pref("webgl.enable-webgl2", false);
user_pref("media.getusermedia.screensharing.enabled", false);
user_pref("media.getusermedia.screensharing.allowed_domains", "");
user_pref("media.getusermedia.browser.enabled", false);
user_pref("media.getusermedia.audiocapture.enabled", false);
user_pref("camera.control.face_detection.enabled", false);
user_pref("canvas.capturestream.enabled", false);
user_pref("dom.imagecapture.enabled", false);
user_pref("gfx.offscreencanvas.enabled", false);
user_pref("media.autoplay.enabled", false);
user_pref("media.block-autoplay-until-in-foreground", true);
user_pref("_user.js.parrot", "2200 syntax error: the parrot's 'istory!");
user_pref("dom.disable_window_open_feature.location", true);
user_pref("dom.disable_window_open_feature.menubar", true);
user_pref("dom.disable_window_open_feature.resizable", true);
user_pref("dom.disable_window_open_feature.status", true);
user_pref("dom.disable_window_open_feature.toolbar", true);
user_pref("dom.disable_window_flip", true); // window z-order
user_pref("dom.disable_window_move_resize", true);
user_pref("dom.disable_window_open_feature.close", true);
user_pref("dom.disable_window_open_feature.minimizable", true);
user_pref("dom.disable_window_open_feature.personalbar", true); // bookmarks toolbar
user_pref("dom.disable_window_open_feature.titlebar", true);
user_pref("dom.disable_window_status_change", true);
user_pref("dom.allow_scripts_to_close_windows", false);
user_pref("browser.link.open_newwindow.restriction", 0);
user_pref("dom.disable_beforeunload", true);
user_pref("_user.js.parrot", "2500 syntax error: the parrot's shuffled off 'is mortal coil!");
user_pref("media.navigator.enabled", false);
user_pref("media.video_stats.enabled", false);
user_pref("layers.acceleration.disabled", true);
user_pref("dom.webaudio.enabled", false);
user_pref("media.ondevicechange.enabled", false);
user_pref("_user.js.parrot", "2600 syntax error: the parrot's run down the curtain!");
user_pref("beacon.enabled", false);
user_pref("browser.download.folderList", 2);
user_pref("browser.download.useDownloadDir", false);
user_pref("browser.helperApps.deleteTempFileOnExit", true);
user_pref("browser.download.manager.addToRecentDocs", false);
user_pref("browser.download.hide_plugins_without_extensions", false);
user_pref("browser.pagethumbnails.capturing_disabled", true); // (hidden pref)
user_pref("network.jar.open-unsafe-types", false);
user_pref("ui.use_standins_for_native_colors", true); // (hidden pref)
user_pref("permissions.manager.defaultsUrl", "");
user_pref("devtools.webide.autoinstallADBHelper", false);
user_pref("devtools.debugger.remote-enabled", false);
user_pref("devtools.webide.enabled", false);
user_pref("network.http.spdy.enabled", false);
user_pref("network.http.spdy.enabled.deps", false);
user_pref("network.http.spdy.enabled.http2", false);
user_pref("pdfjs.disabled", false);
user_pref("network.proxy.socks_remote_dns", true);
user_pref("network.http.redirection-limit", 10);
user_pref("middlemouse.contentLoadURL", false);
user_pref("security.dialog_enable_delay", 700);
user_pref("security.fileuri.strict_origin_policy", true);
user_pref("security.sri.enable", true);
user_pref("network.dns.blockDotOnion", true);
user_pref("general.useragent.compatMode.firefox", false);
user_pref("browser.uitour.enabled", false);
user_pref("browser.uitour.url", "");
user_pref("network.jar.block-remote-files", true);
user_pref("browser.download.forbid_open_with", true);
user_pref("mathml.disabled", true);
user_pref("device.storage.enabled", false);
user_pref("webchannel.allowObject.urlWhitelist", "");
user_pref("network.http.altsvc.enabled", false);
user_pref("network.http.altsvc.oe", false);
user_pref("devtools.chrome.enabled", false);
user_pref("extensions.enabledScopes", 1); // (hidden pref)
user_pref("extensions.autoDisableScopes", 15);
user_pref("network.proxy.autoconfig_url.include_path", false);
user_pref("security.block_script_with_wrong_mime", true);
user_pref("network.IDN_show_punycode", true);
user_pref("security.csp.enable", true);
user_pref("security.csp.experimentalEnabled", true);
user_pref("security.data_uri.block_toplevel_data_uri_navigations", true);
user_pref("_user.js.parrot", "2800 syntax error: the parrot's bleedin' demised!");
user_pref("privacy.sanitize.sanitizeOnShutdown", true);
user_pref("privacy.clearOnShutdown.cache", true);
user_pref("privacy.clearOnShutdown.cookies", false);
user_pref("privacy.clearOnShutdown.downloads", true); // see note above
user_pref("privacy.clearOnShutdown.formdata", true); // Form & Search History
user_pref("privacy.clearOnShutdown.history", true); // Browsing & Download History
user_pref("privacy.clearOnShutdown.offlineApps", true); // Offline Website Data
user_pref("privacy.clearOnShutdown.sessions", true); // Active Logins
user_pref("privacy.clearOnShutdown.siteSettings", false); // Site Preferences
user_pref("privacy.cpd.cache", true);
user_pref("privacy.cpd.cookies", false);
user_pref("privacy.cpd.formdata", true); // Form & Search History
user_pref("privacy.cpd.history", true); // Browsing & Download History
user_pref("privacy.cpd.offlineApps", true); // Offline Website Data
user_pref("privacy.cpd.passwords", false); // this is not listed
user_pref("privacy.cpd.sessions", true); // Active Logins
user_pref("privacy.cpd.siteSettings", false); // Site Preferences
user_pref("privacy.sanitize.timeSpan", 0);
user_pref("_user.js.parrot", "4500 syntax error: the parrot's popped 'is clogs");
user_pref("privacy.resistFingerprinting", true); // (hidden pref) (not hidden FF55+)
user_pref("_user.js.parrot", "4600 syntax error: the parrot's crossed the Jordan");
user_pref("dom.enable_resource_timing", false);
user_pref("dom.enable_performance", false);
user_pref("browser.zoom.siteSpecific", false);
user_pref("dom.netinfo.enabled", false);
user_pref("media.webspeech.synth.enabled", false);
user_pref("geo.enabled", false);
user_pref("_user.js.parrot", "4700 syntax error: the parrot's taken 'is last bow");
user_pref("_user.js.parrot", "5000 syntax error: this is an ex-parrot!");
user_pref("general.warnOnAboutConfig", false);
user_pref("browser.tabs.warnOnClose", false);
user_pref("browser.tabs.warnOnCloseOtherTabs", false);
user_pref("browser.tabs.warnOnOpen", false);
user_pref("browser.tabs.closeWindowWithLastTab", false);
user_pref("browser.backspace_action", 2);
user_pref("browser.link.open_newwindow", 3);
user_pref("browser.ctrlTab.previews", true);
user_pref("view_source.tab", false);
user_pref("layout.spellcheckDefault", 1);
user_pref("network.manage-offline-status", false);
user_pref("ui.submenuDelay", 150); // (hidden pref)
user_pref("browser.bookmarks.max_backups", 2);
user_pref("browser.urlbar.clickSelectsAll", true);
user_pref("browser.urlbar.doubleClickSelectsAll", false);
user_pref("browser.tabs.insertRelatedAfterCurrent", true);
user_pref("browser.tabs.selectOwnerOnClose", true);
user_pref("browser.tabs.loadInBackground", true);
user_pref("browser.tabs.loadDivertedInBackground", false);
user_pref("browser.urlbar.decodeURLsOnCopy", true);
user_pref("_user.js.parrot", "SUCCESS: No no he's not dead, he's, he's restin'!");

[Shannon S]

Thank you, Jason.

I've shown this to the editor team and they did let me know that customizations such as this, ad blockers, etc. can and do break things in Cloud.

Please continue to provide your feedback via Community. If you're able to isolate the problem with your script you can let us know and we can make a post here that the feedback form does not work with certain user scripts so other users are aware.

Regards,

Shannon