Can't sync site config from git, entities exist of type x
Two things are happening:


In your active configuration in the database, some module(s) is/are installed, that isn't/aren't installed in the configuration you are trying to import. The problem is that you have content for the thing(s) being uninstalled, so if you were to import the configuration, you'd have ghosts in your database. These ghosts are listed in the errors that begin with 'Entities exist of of type X'.

To resolve this you'll need to either enable the missing item(s) in the configuration you're trying to import, or you'll need to delete the items from the database before you import your configuration. 
The configuration you are trying to import has enabled modules, but the codebase for those modules does not exist in the Drupal installation you are trying to import the configuration into. These modules are listed at the end of the errors that begin with 'Unable to install the X module' (ex - you are missing the Path Alias code base).

To resolve this, you'll either need to add the code for the required modules to your codebase.