I Grant,
Pleased to read that the topic is progressing positively!
I'm using Mint 20.2 that is based upon Ubuntu 20.04 (Focal Fossa). 'libgcc1' was natively installed but not 'lib64stdc++6'. So I did it manually (Synaptic package) for the latest, and rebooted the machine, in case.
Unfortunately it doesn't solve the issue in my case. Is their any other action that I could test ?
Have a good day!
Didier

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