This was the output:
admin@veno:~ $ sudo apt remove g++ g++-8 gcc libstdc++-8-dev
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt --fix-broken install' to correct these.
The following packages have unmet dependencies:
libtool : Depends: gcc but it is not going to be installed or
c-compiler
E: Unmet dependencies. Try 'apt --fix-broken install' with no packages (or specify a solution).
admin@veno:~ $
But unfortunately the webadmin > Tools > Migration failed again.
Here are the logs:
and YunoPaste log is here: https://paste.yunohost.org/raw/pinegawivu