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Thunderbird and Upgrade to Mac OS 11.0.1 - Big Sur

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I just installed the Big Sur Upgrade. When I went to open Thunderbird I got the following message: "Profile Missing: Your Thunderbird Profile cannot be loaded. It may be missing or inaccessible." With this message, I am unable to open Thunderbird at all.

How do I find and restore my Thunderbird Profile?

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The problem was solved when I restarted my computer. It asked for the iCloud passphrase. Once in iCloud, the missing profiles repopulated Thunderbird and it works well now.

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