Script problem in admin

Hi,

I’m find one error on admin page console: (Ultimate Member form edit page)
I tried to add (or edit) content box and the editor not load.

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Uncaught TypeError: Cannot read property ‘nodeName’ of null
at q.setContent (wp-tinymce.php?c=1&ver=4607-20180123:15)
at q.load (wp-tinymce.php?c=1&ver=4607-20180123:15)
at q.show (wp-tinymce.php?c=1&ver=4607-20180123:15)
at e (editor.min.js?ver=4.9.5:1)
at HTMLDocument.<anonymous> (editor.min.js?ver=4.9.5:1)
at a (wp-tinymce.php?c=1&ver=4607-20180123:2)
at HTMLDocument.p (wp-tinymce.php?c=1&ver=4607-20180123:2)
at Object.trigger (load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils&ver=4.9.5:3)
at Object.a.event.trigger (load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils&ver=4.9.5:9)
at HTMLButtonElement.<anonymous> (load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils&ver=4.9.5:3)
setContent @ wp-tinymce.php?c=1&ver=4607-20180123:15
load @ wp-tinymce.php?c=1&ver=4607-20180123:15
show @ wp-tinymce.php?c=1&ver=4607-20180123:15
e @ editor.min.js?ver=4.9.5:1
(anonymous) @ editor.min.js?ver=4.9.5:1
a @ wp-tinymce.php?c=1&ver=4607-20180123:2
p @ wp-tinymce.php?c=1&ver=4607-20180123:2
trigger @ load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils&ver=4.9.5:3
a.event.trigger @ load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils&ver=4.9.5:9
(anonymous) @ load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils&ver=4.9.5:3
each @ load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils&ver=4.9.5:2
each @ load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils&ver=4.9.5:2
trigger @ load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils&ver=4.9.5:3
success @ um-admin-modal.js?ver=4.9.5:81
i @ load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils&ver=4.9.5:2
fireWith @ load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils&ver=4.9.5:2
y @ load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils&ver=4.9.5:4
c @ load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils&ver=4.9.5:4
XMLHttpRequest.send (async)
send @ load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils&ver=4.9.5:4
ajax @ load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils&ver=4.9.5:4
um_admin_modal_ajaxcall @ um-admin-modal.js?ver=4.9.5:53
(anonymous) @ um-admin-modal.js?ver=4.9.5:277
dispatch @ load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils&ver=4.9.5:3
r.handle @ load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils&ver=4.9.5:3
wp-tinymce.php?c=1&ver=4607-20180123:15 Uncaught TypeError: Cannot read property ‘serialize’ of undefined
at q.getContent (wp-tinymce.php?c=1&ver=4607-20180123:15)
at Object.success (um-admin-modal.js?ver=4.9.5:86)
at i (load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils&ver=4.9.5:2)
at Object.fireWith [as resolveWith] (load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils&ver=4.9.5:2)
at y (load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils&ver=4.9.5:4)
at XMLHttpRequest.c (load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils&ver=4.9.5:4)
getContent @ wp-tinymce.php?c=1&ver=4607-20180123:15
success @ um-admin-modal.js?ver=4.9.5:86
i @ load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils&ver=4.9.5:2
fireWith @ load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils&ver=4.9.5:2
y @ load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils&ver=4.9.5:4
c @ load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils&ver=4.9.5:4
XMLHttpRequest.send (async)
send @ load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils&ver=4.9.5:4
ajax @ load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils&ver=4.9.5:4
um_admin_modal_ajaxcall @ um-admin-modal.js?ver=4.9.5:53
(anonymous) @ um-admin-modal.js?ver=4.9.5:277
dispatch @ load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils&ver=4.9.5:3
r.handle @ load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils&ver=4.9.5:3
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WordPress: 4.9.5
Ultimate Member: 2.0.8