Unable to create "container" type of custom widget

Description

Hello,
I want to create a modal widget and i saw 7.8 beta version modal container. Then i wanted to create similar modal use before 7.8 arrives. But when i create widget with container type, i cant open any of my forms or pages or create new form/page. It gives me Init error.

This is detailed error,

TypeError: Cannot read property 'init' of undefined
at f (page-builder-1542893896847.min.js:20)
at Array.map (<anonymous>)
at u (page-builder-1542893896847.min.js:20)
at vendors-1542893896847.min.js:150
at n.$eval (vendors-1542893896847.min.js:164)
at n.$digest (vendors-1542893896847.min.js:161)
at n.$apply (vendors-1542893896847.min.js:164)
at h (vendors-1542893896847.min.js:118)
at K (vendors-1542893896847.min.js:122)
at XMLHttpRequest.z.onload (vendors-1542893896847.min.js:124)

Environment

windows 10

Steps to reproduce

None

Workaround

None

External Link

None

Status

Assignee

Pierrick Voulet

Reporter

Mehmet Sakir KUTLU

Reference

None

Components

Affects versions

7.7.2
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