When I click on Settings Menu, I get the following error - 

Error:

Traceback:

TypeError: Cannot read properties of undefined (reading 'form')

    at http://65.2.111.189/web/content/3316-e929ab4/web.assets_backend.js:448:309

    at _.each._.forEach (http://65.2.111.189/web/content/1908-99650a5/web.assets_common.js:108:558)

    at Class._generateActionViews (http://65.2.111.189/web/content/3316-e929ab4/web.assets_backend.js:448:229)

    at http://65.2.111.189/web/content/3316-e929ab4/web.assets_backend.js:443:497

Because of this, I cannot activate the developer mode, causing many other problems. 

I am using Odoo 13 community edition.