Widget won’t save/can’t add widget

Getting two errors in console, widget will not set into widget, just errors.

onloadwff.js:71 Uncaught TypeError: Cannot read property ‘type’ of undefined
at setFieldValue (onloadwff.js:71)
at HTMLFormElement.formKeydownListener (onloadwff.js:71)
setFieldValue @ onloadwff.js:71
formKeydownListener @ onloadwff.js:71
VM1468:1 POST https://website.com/wp-admin/admin-ajax.php?_fs_blog_admin=true 500
(anonymous) @ VM1468:1
send @ load-scripts.php?c=0&load[chunk_0]=jquery-core,jquery-migrate,utils,jquery-ui-core,jquery-ui-widget,jquery-ui-mouse,jquery-ui-sortable&ver=523ed22ddf0366bdcb61f1484a7f5995:4
ajax @ load-scripts.php?c=0&load[chunk_0]=jquery-core,jquery-migrate,utils,jquery-ui-core,jquery-ui-widget,jquery-ui-mouse,jquery-ui-sortable&ver=523ed22ddf0366bdcb61f1484a7f5995:4
n.<computed> @ load-scripts.php?c=0&load[chunk_0]=jquery-core,jquery-migrate,utils,jquery-ui-core,jquery-ui-widget,jquery-ui-mouse,jquery-ui-sortable&ver=523ed22ddf0366bdcb61f1484a7f5995:4
save @ widgets.min.js?ver=523ed22ddf0366bdcb61f1484a7f5995:2
stop @ widgets.min.js?ver=523ed22ddf0366bdcb61f1484a7f5995:2
_trigger @ load-scripts.php?c=0&load[chunk_0]=jquery-core,jquery-migrate,utils,jquery-ui-core,jquery-ui-widget,jquery-ui-mouse,jquery-ui-sortable&ver=523ed22ddf0366bdcb61f1484a7f5995:32
_trigger @ load-scripts.php?c=0&load[chunk_0]=jquery-core,jquery-migrate,utils,jquery-ui-core,jquery-ui-widget,jquery-ui-mouse,jquery-ui-sortable&ver=523ed22ddf0366bdcb61f1484a7f5995:54
h.isFunction.a.<computed> @ load-scripts.php?c=0&load[chunk_0]=jquery-core,jquery-migrate,utils,jquery-ui-core,jquery-ui-widget,jquery-ui-mouse,jquery-ui-sortable&ver=523ed22ddf0366bdcb61f1484a7f5995:32
_clear @ load-scripts.php?c=0&load[chunk_0]=jquery-core,jquery-migrate,utils,jquery-ui-core,jquery-ui-widget,jquery-ui-mouse,jquery-ui-sortable&ver=523ed22ddf0366bdcb61f1484a7f5995:54
h.isFunction.a.<computed> @ load-scripts.php?c=0&load[chunk_0]=jquery-core,jquery-migrate,utils,jquery-ui-core,jquery-ui-widget,jquery-ui-mouse,jquery-ui-sortable&ver=523ed22ddf0366bdcb61f1484a7f5995:32
_mouseStop @ load-scripts.php?c=0&load[chunk_0]=jquery-core,jquery-migrate,utils,jquery-ui-core,jquery-ui-widget,jquery-ui-mouse,jquery-ui-sortable&ver=523ed22ddf0366bdcb61f1484a7f5995:54
h.isFunction.a.<computed> @ load-scripts.php?c=0&load[chunk_0]=jquery-core,jquery-migrate,utils,jquery-ui-core,jquery-ui-widget,jquery-ui-mouse,jquery-ui-sortable&ver=523ed22ddf0366bdcb61f1484a7f5995:32
(anonymous) @ load-scripts.php?c=0&load[chunk_0]=hoverIntent,common,hoverintent-js,admin-bar,jquery-ui-resizable,jquery-ui-draggable,jquery-ui-button,jquery-ui-position,jquery-u&load[chunk_1]=i-dialog,wp-pointer,jquery-ui-droppable&ver=523ed22ddf0366bdcb61f1484a7f5995:31
each @ load-scripts.php?c=0&load[chunk_0]=jquery-core,jquery-migrate,utils,jquery-ui-core,jquery-ui-widget,jquery-ui-mouse,jquery-ui-sortable&ver=523ed22ddf0366bdcb61f1484a7f5995:2
stop @ load-scripts.php?c=0&load[chunk_0]=hoverIntent,common,hoverintent-js,admin-bar,jquery-ui-resizable,jquery-ui-draggable,jquery-ui-button,jquery-ui-position,jquery-u&load[chunk_1]=i-dialog,wp-pointer,jquery-ui-droppable&ver=523ed22ddf0366bdcb61f1484a7f5995:31
call @ load-scripts.php?c=0&load[chunk_0]=jquery-core,jquery-migrate,utils,jquery-ui-core,jquery-ui-widget,jquery-ui-mouse,jquery-ui-sortable&ver=523ed22ddf0366bdcb61f1484a7f5995:21
_trigger @ load-scripts.php?c=0&load[chunk_0]=hoverIntent,common,hoverintent-js,admin-bar,jquery-ui-resizable,jquery-ui-draggable,jquery-ui-button,jquery-ui-position,jquery-u&load[chunk_1]=i-dialog,wp-pointer,jquery-ui-droppable&ver=523ed22ddf0366bdcb61f1484a7f5995:31
h.isFunction.a.<computed> @ load-scripts.php?c=0&load[chunk_0]=jquery-core,jquery-migrate,utils,jquery-ui-core,jquery-ui-widget,jquery-ui-mouse,jquery-ui-sortable&ver=523ed22ddf0366bdcb61f1484a7f5995:32
_mouseStop @ load-scripts.php?c=0&load[chunk_0]=hoverIntent,common,hoverintent-js,admin-bar,jquery-ui-resizable,jquery-ui-draggable,jquery-ui-button,jquery-ui-position,jquery-u&load[chunk_1]=i-dialog,wp-pointer,jquery-ui-droppable&ver=523ed22ddf0366bdcb61f1484a7f5995:31
h.isFunction.a.<computed> @ load-scripts.php?c=0&load[chunk_0]=jquery-core,jquery-migrate,utils,jquery-ui-core,jquery-ui-widget,jquery-ui-mouse,jquery-ui-sortable&ver=523ed22ddf0366bdcb61f1484a7f5995:32
_mouseUp @ load-scripts.php?c=0&load[chunk_0]=jquery-core,jquery-migrate,utils,jquery-ui-core,jquery-ui-widget,jquery-ui-mouse,jquery-ui-sortable&ver=523ed22ddf0366bdcb61f1484a7f5995:43
h.isFunction.a.<computed> @ load-scripts.php?c=0&load[chunk_0]=jquery-core,jquery-migrate,utils,jquery-ui-core,jquery-ui-widget,jquery-ui-mouse,jquery-ui-sortable&ver=523ed22ddf0366bdcb61f1484a7f5995:32
_mouseUp @ load-scripts.php?c=0&load[chunk_0]=hoverIntent,common,hoverintent-js,admin-bar,jquery-ui-resizable,jquery-ui-draggable,jquery-ui-button,jquery-ui-position,jquery-u&load[chunk_1]=i-dialog,wp-pointer,jquery-ui-droppable&ver=523ed22ddf0366bdcb61f1484a7f5995:31
h.isFunction.a.<computed> @ load-scripts.php?c=0&load[chunk_0]=jquery-core,jquery-migrate,utils,jquery-ui-core,jquery-ui-widget,jquery-ui-mouse,jquery-ui-sortable&ver=523ed22ddf0366bdcb61f1484a7f5995:32
_mouseDistanceMet._mouseDelayMet._mouseUpDelegate @ load-scripts.php?c=0&load[chunk_0]=jquery-core,jquery-migrate,utils,jquery-ui-core,jquery-ui-widget,jquery-ui-mouse,jquery-ui-sortable&ver=523ed22ddf0366bdcb61f1484a7f5995:43
dispatch @ load-scripts.php?c=0&load[chunk_0]=jquery-core,jquery-migrate,utils,jquery-ui-core,jquery-ui-widget,jquery-ui-mouse,jquery-ui-sortable&ver=523ed22ddf0366bdcb61f1484a7f5995:3
r.handle @ load-scripts.php?c=0&load[chunk_0]=jquery-core,jquery-migrate,utils,jquery-ui-core,jquery-ui-widget,jquery-ui-mouse,jquery-ui-sortable&ver=523ed22ddf0366bdcb61f1484a7f5995:3

VM1468:1 POST https://website.com/wp-admin/admin-ajax.php?_fs_blog_admin=true 500