I am on Ubuntu 20.10 having upgraded from 20.04 And have just done the latest updates this included Kernel 5.8.0-26-generic. However, on re-starting the machine, Thunderbird won’t start anymore. I get the following error message :
XML Parsing Error: undefined entity Location:
chrome://messenger/content/messenger.xhtml Line Number 905, Column 3:
<key id="openLightningKey"
--^
Any idea to fix it ?
addendum : I downloaded the tar.bz2 from Thunderbird site, and I succeed in opening my profile with ./thunderbird -P Strange !