Content block Visual mode not working

[pdxor]

Once I hit the visual tab this errors pops out Uncaught TypeError: Cannot read property 'onpageload' of undefined at tinymce.min.js?ver=4920-20181217:2 at e (tinymce.min.js?ver=4920-20181217:2) at ke.b.bind (tinymce.min.js?ver=4920-20181217:2) at Object.F [as bind] (tinymce.min.js?ver=4920-20181217:2) at Object.init (tinymce.min.js?ver=4920-20181217:2) at e (editor.min.js?ver=5.1.1:1) at HTMLDocument. (editor.min.js?ver=5.1.1:1) at C (tinymce.min.js?ver=4920-20181217:2) at HTMLDocument.d (tinymce.min.js?ver=4920-20181217:2)

[pdxor]

On page load of page editor this error happens 5 times I think once for every content block loaded

hooks.min.js?ver=2.0.5:1 The hook name can only contain numbers, letters, dashes, periods and underscores. o @ hooks.min.js?ver=2.0.5:1 (anonymous) @ hooks.min.js?ver=2.0.5:1 add_action @ acf-input.min.js?ver=5.6.5:1 (anonymous) @ admin-script.js?ver=5.1.1:40 i @ load-scripts.php?c=0&load[]=jquery-core,jquery-migrate,utils,jquery-ui-core,jquery-ui-widget,jquery-ui-mouse,jquery-ui-sortable,jquery-ui-position,moxiejs,p&load[]=lupload&ver=5.1.1:2 fireWith @ load-scripts.php?c=0&load[]=jquery-core,jquery-migrate,utils,jquery-ui-core,jquery-ui-widget,jquery-ui-mouse,jquery-ui-sortable,jquery-ui-position,moxiejs,p&load[]=lupload&ver=5.1.1:2 ready @ load-scripts.php?c=0&load[]=jquery-core,jquery-migrate,utils,jquery-ui-core,jquery-ui-widget,jquery-ui-mouse,jquery-ui-sortable,jquery-ui-position,moxiejs,p&load[]=lupload&ver=5.1.1:2 K @ load-scripts.php?c=0&load[]=jquery-core,jquery-migrate,utils,jquery-ui-core,jquery-ui-widget,jquery-ui-mouse,jquery-ui-sortable,jquery-ui-position,moxiejs,p&load[]=lupload&ver=5.1.1:2