Can not uninstall the plugin

@franciscofgb it can in default environment.
There is even autotest for this case: https://github.com/garex/wp-testing/blob/3864a39f3feb8aafb2cd817e80dd70d316ab6415/tests/mocha/test/z-plugin-deactivation.js#L31
Looks like you have some strictly configured environment/database, that brokes the things out. At your initial topic you didn’t provide any info.