Uncaught TypeError: views[view].widgets[group] is undefined

[bkomac]

Describe the bug
After some small change (maybe just the position of some random widget) causes Vis project to become unstable and won't load anymore. Have to switch to default project and re-import the original project from backup.
The error in browser console is the same on vis view and admin page:
Uncaught TypeError: views[view].widgets[group] is undefined

To Reproduce
I can provide vis-views.json.
vis-views.json.txt

Expected behavior
Vis project to load ok.

Screenshots & Logfiles

console-export-2023-4-10_18-1-11.txt
console-export-2023-4-10_18-0-51.txt

Versions:

• Adapter version: Vis v1.4.16
• JS-Controller version: 4.0.24
• Node version: v16.19.0
• Operating system: Raspbian GNU/Linux 10 (buster)

Additional context
package-lock.json.txt

[maffi-git]

I have this problem too.
Created some new groups in vis and after that, it broke. Now I have to find out, how to restore that backup...

[p-kehling]

+1 I have same issue. I cannot restore my view from backup.

Current workaround i found, edit the file files/vis/js/visUtils.js line 513 and 514 to:

var result3 = replaceGroupAttr(lcsid, views[view].widgets[ggroup].data);
if (result3.doesMatch) {

to:

var result3 = replaceGroupAttr(lcsid, views[view].widgets[ggroup]?.data);
if (result3?.doesMatch) {

(adding ? on property accessor)

Now vis is loading again, but I miss two widget groups which are now shown white / empty.

I think it's an issue while export, I can reproduce it now with another view.

Can someone please help?