2.0 causes JS Backend-Error

At any admin-page, the console complains about the following:

mfis-admin-scripts.min.js?ver=4.9.9:1

Uncaught TypeError: $ is not a function
    at mfis_check_image (mfis-admin-scripts.min.js?ver=4.9.9:1)
    at HTMLDocument.<anonymous> (mfis-admin-scripts.min.js?ver=4.9.9:1)
    at i (load-scripts.php?c=0&load[]=jquery-core,jquery-migrate,utils&ver=4.9.9:2)
    at Object.fireWith [as resolveWith] (load-scripts.php?c=0&load[]=jquery-core,jquery-migrate,utils&ver=4.9.9:2)
    at Function.ready (load-scripts.php?c=0&load[]=jquery-core,jquery-migrate,utils&ver=4.9.9:2)
    at HTMLDocument.K (load-scripts.php?c=0&load[]=jquery-core,jquery-migrate,utils&ver=4.9.9:2)

Disabling the plugin resolves all issues.