Can’t edit widgets

Hi, im unable to edit widgets,
There is a pic. https://imgur.com/a/oR6ooVx

this is what the console tells me:

Uncaught TypeError: Cannot read property ‘init’ of undefined
at widgets.php:148
Uncaught TypeError: Cannot read property ‘modelConstructors’ of undefined at widgets.php:152
widgets.php:160 Uncaught TypeError: Cannot read property ‘modelConstructors’ of undefined at widgets.php:160
widgets.php:168 Uncaught TypeError: Cannot read property ‘modelConstructors’ of undefined at widgets.php:168
widgets.php:176 Uncaught TypeError: Cannot read property ‘modelConstructors’ of undefined at widgets.php:176
widgets.php:185 Uncaught TypeError: Cannot read property ‘idBases’ of undefined
at widgets.php:185
widgets.php:191 Uncaught TypeError: Cannot read property ‘defaultSettings’ of undefined
at widgets.php:191
widgets.php:198 Uncaught TypeError: Cannot read property ‘idBases’ of undefined
at widgets.php:198
widgets.php:4743 Uncaught ReferenceError: wpWidgets is not defined
at widgets.php:4743
…/admin-ajax.php 503 (Service Unavailable)

The widgets where working properly a while ago
I’ve tried disabling plugins with no result
Thank you for you assistance.

• This topic was modified 7 years, 6 months ago by civerreus.

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