I have this problem since I start to using D8, but don’t know how to get over it.
I firstly installed my D8 through ftp upload , and then I install commerce2 through composer.
Now I don’t know how can I upgrade my core, because when I upload the new version again , it will cause problem on the vendor folder that commerce is using.
Does anyone knows how to solve this problem, because I need to upgrade the drupal core ? ( drupal core by ftp upload, commerce by composer)