Thunderbird
XML Parsing Error: undefined entity Location: chrome://messenger/content/messenger.xhtml Line Number 1636, Column 9:
<toolbarbutton id="appmenu_customize" </pre>
^This is coming with the upgrade to Thunderbird version 78.2.2
XML Parsing Error: undefined entity
Location: chrome://messenger/content/messenger.xhtml
Line Number 1636, Column 9:
<toolbarbutton id="appmenu_customize"
--------^
This is coming with the upgrade to Thunderbird version 78.2.2