Error Message with Extension Manager: "Oh snap! de/js/app.soy.js failed to load! :("

hello
I’ve also got the en/js/app.soy.js failed to load! message shown in the extension manager.

I’ve installed French version by mistake.
I’m using the english version with option language parameter can be set in the shortcut “target” -lang en

No such file in Roaming or ProgramData.
Nor in 2020 folders or 2019 folders.
I used 2019 in english version !

Wrote to the support.
Sketchup Team Please help.

An other problem : From time to time Sketchup goes mad.
My cursor shows an hourglass and wont let me carry on with any command until it releases the pointer !!!

Please help again.
I would like not to have to desable my plug ins one by one.