_windowIds chrome://extensions/content/parent/ext-tabs-base.js:1460
   get resource://gre/modules/ExtensionUtils.jsm:88
   getId chrome://extensions/content/parent/ext-tabs-base.js:1550
   getCurrent chrome://extensions/content/parent/ext-theme.js:441
   getCurrent self-hosted:1175
   result resource://gre/modules/ExtensionParent.jsm:935
   withPendingBrowser resource://gre/modules/ExtensionParent.jsm:491
   result resource://gre/modules/ExtensionParent.jsm:935
   callAndLog resource://gre/modules/ExtensionParent.jsm:897
   recvAPICall resource://gre/modules/ExtensionParent.jsm:934
   AsyncFunctionNext self-hosted:692
   _mimeDoFcc resource:///modules/MessageSend.jsm:941
   InterpretGeneratorResume self-hosted:1482
   AsyncFunctionNext self-hosted:692

I just upgraded to the latest allegedly stable version 91.7.0. Now, I can see my emails, but can't actually send anything, nor does it receive any new emails. I'm using Linux Mint. Here are key things I saw in the error console: Window is null ext-tabs-base.js:1460 _windowIds chrome://extensions/content/parent/ext-tabs-base.js:1460 get resource://gre/modules/ExtensionUtils.jsm:88 getId chrome://extensions/content/parent/ext-tabs-base.js:1550 getCurrent chrome://extensions/content/parent/ext-theme.js:441 getCurrent self-hosted:1175 result resource://gre/modules/ExtensionParent.jsm:935 withPendingBrowser resource://gre/modules/ExtensionParent.jsm:491 result resource://gre/modules/ExtensionParent.jsm:935 callAndLog resource://gre/modules/ExtensionParent.jsm:897 recvAPICall resource://gre/modules/ExtensionParent.jsm:934 AsyncFunctionNext self-hosted:692 _mimeDoFcc resource:///modules/MessageSend.jsm:941 InterpretGeneratorResume self-hosted:1482 AsyncFunctionNext self-hosted:692 and also: 21:49:10.998 tb.account.size_on_disk - Trying to set an unsigned scalar to a negative number. 2 21:49:10.999 tb.account.size_on_disk - Truncating float/double number. 4 21:49:10.999 tb.account.size_on_disk - Attempted to set the scalar to an incompatible value. 2 21:49:11.000 tb.account.size_on_disk - Truncating float/double number. 2 21:49:11.000 tb.account.size_on_disk - Attempted to set the scalar to an incompatible value. 2 21:49:34.922 NS_ERROR_NOT_AVAILABLE: manager.js:32 21:50:19.402 TypeError: win.gDBView is null contactsApi.js:334:9 21:50:19.610 sendRemoveListener on closed conduit languagetool-mailextension@languagetool.org.1236950581248 2 ConduitsChild.jsm:108 21:50:19.981 TypeError: win.gDBView is null 2 contactsApi.js:334:9 21:50:28.046 TypeError: win.gDBView is null contactsApi.js:334:9 21:50:31.286 sendRemoveListener on closed conduit languagetool-mailextension@languagetool.org.137 2 ConduitsChild.jsm:108 21:50:31.287 Promise rejected after context unloaded: Actor 'Conduits' destroyed before query 'RuntimeMessage' was resolved extensionEnvironmentAdapter.js:2 21:50:44.527 NS_ERROR_NOT_AVAILABLE: manager.js:32 21:53:11.335 <Provider> does not support changing `store` on the fly. It is most likely that you see this error because you updated to Redux 2.x and React Redux 2.x which no longer hot reload reducers automatically. See https://github.com/reactjs/react-redux/releases/tag/v2.0.0 for the migration instructions. react-redux.js:881:13 21:53:51.659 Promise resolved while context is inactive extensionEnvironmentAdapter.js:2 21:53:51.660 sendRemoveListener on closed conduit languagetool-mailextension@languagetool.org.146 2 ConduitsChild.jsm:108