Setting Unique Key on Repeat Children errors

Wappler Version : 4.6.0
Operating System : mac
Server Model: node
Database Type:
Hosting Type:

Expected behavior

I should be able to pick a unique key for a Repeat Children component

Actual behavior

Error is generated and nothing is added to code

TypeError: Cannot read property 'val' of undefined at Object.popupComplete [as callback] (file:///Applications/Wappler.app/Contents/Resources/app/Shared/DMXzone/dmxAppCreator/UI/dmxAppConnect/dmxAppConnect_utils.js:1753:16) at Object.dmxDWApiBridge.applyCallback (file:///Applications/Wappler.app/Contents/Resources/app/Shared/DMXzone/dmxAppCreator/dmxDWApiBridge/dmxNWApiBridge.js:8:9509) at EventEmitter.<anonymous> (file:///Applications/Wappler.app/Contents/Resources/app/Shared/DMXzone/dmxAppCreator/dmxDWApiBridge/dmxNWApiBridge.js:8:25371) at Object.onceWrapper (events.js:422:26) at EventEmitter.emit (events.js:315:20) at Object.onMessage (electron/js2c/renderer_init.js:93:1117)

How to reproduce

Set Expression of repeat, and then attempt to select an item as a unique key

Screen Shot 2022-02-17 at 2.16.20 PM1464×1968 185 KB

This is the server connect for what is referenced in the expression of the repeat (however it appears to happen when choosing several other arrays for the expression.

Screen Shot 2022-02-17 at 2.19.31 PM1786×798 119 KB