6.6.2 does not allow creating extensions: TypeError: a.get_node is not a function

Wappler 6.6.2
Windows 11

When creating a new extension after Saving this new extension it creates the file and folder respectively, but then when saving Project Options to set this new extension, nothing happened. But looking at the logs after rebooting with logging, I get this in the log file:
Wappler 6.6.1 doesn't have this problem.

[2024-06-09 20:42:16.665] TypeError: a.get_node is not a function
    at b.refreshDatabaseSchema (file:///C:/Users/xxxx/AppData/Local/Wappler/resources/app/Shared/DMXzone/dmxAppCreator/UI/databaseManager.js:1:195444)
    at w.saveDatabaseConnectionForTarget (file:///C:/Users/xxxx/AppData/Local/Wappler/resources/app/Shared/DMXzone/dmxAppCreator/UI/w2targets.js:1:177514)
    at file:///C:/Users/xxxx/AppData/Local/Wappler/resources/app/Shared/DMXzone/dmxAppCreator/UI/w2targets.js:1:163001
    at Array.map (<anonymous>)
    at w.getTargets (file:///C:/Users/xxxx/AppData/Local/Wappler/resources/app/Shared/DMXzone/dmxAppCreator/UI/w2targets.js:1:134791)
    at Object.save (file:///C:/Users/xxxx/AppData/Local/Wappler/resources/app/Shared/DMXzone/dmxAppCreator/UI/project_options_web.js:1:9321)
    at file:///C:/Users/xxxx/AppData/Local/Wappler/resources/app/Shared/DMXzone/dmxAppCreator/UI/wappler_editor_project_options.js:1:1782
    at e._execute (file:///C:/Users/xxxx/AppData/Local/Wappler/resources/app/Shared/DMXzone/dmxAppCreator/UI/jQuery/bluebird.min.js:29:19922)
    at i._resolveFromExecutor (file:///C:/Users/xxxx/AppData/Local/Wappler/resources/app/Shared/DMXzone/dmxAppCreator/UI/jQuery/bluebird.min.js:30:15342)
    at new i (file:///C:/Users/xxxx/AppData/Local/Wappler/resources/app/Shared/DMXzone/dmxAppCreator/UI/jQuery/bluebird.min.js:30:7039)
    at e.save (file:///C:/Users/xxxx/AppData/Local/Wappler/resources/app/Shared/DMXzone/dmxAppCreator/UI/wappler_editor_project_options.js:1:1720)
    at r.save (file:///C:/Users/xxxx/AppData/Local/Wappler/resources/app/Shared/DMXzone/dmxAppCreator/UI/wappler_editors_manager.js:1:7368)
    at file:///C:/Users/xxxx/AppData/Local/Wappler/resources/app/Shared/DMXzone/dmxAppCreator/UI/menu.js:1:2441
    at sentryWrapped (C:\Users\xxxx\AppData\Local\Wappler\resources\app\node_modules\@sentry\browser\cjs\helpers.js:92:17)
[2024-06-09 20:42:16.666] TypeError: a.get_node is not a function
    at b.refreshDatabaseSchema (file:///C:/Users/xxxx/AppData/Local/Wappler/resources/app/Shared/DMXzone/dmxAppCreator/UI/databaseManager.js:1:195444)
    at w.saveDatabaseConnectionForTarget (file:///C:/Users/xxxx/AppData/Local/Wappler/resources/app/Shared/DMXzone/dmxAppCreator/UI/w2targets.js:1:177514)
    at file:///C:/Users/xxxx/AppData/Local/Wappler/resources/app/Shared/DMXzone/dmxAppCreator/UI/w2targets.js:1:163001
    at Array.map (<anonymous>)
    at w.getTargets (file:///C:/Users/xxxx/AppData/Local/Wappler/resources/app/Shared/DMXzone/dmxAppCreator/UI/w2targets.js:1:134791)
    at Object.save (file:///C:/Users/xxxx/AppData/Local/Wappler/resources/app/Shared/DMXzone/dmxAppCreator/UI/project_options_web.js:1:9321)
    at file:///C:/Users/xxxx/AppData/Local/Wappler/resources/app/Shared/DMXzone/dmxAppCreator/UI/wappler_editor_project_options.js:1:1782
    at e._execute (file:///C:/Users/xxxx/AppData/Local/Wappler/resources/app/Shared/DMXzone/dmxAppCreator/UI/jQuery/bluebird.min.js:29:19922)
    at i._resolveFromExecutor (file:///C:/Users/xxxx/AppData/Local/Wappler/resources/app/Shared/DMXzone/dmxAppCreator/UI/jQuery/bluebird.min.js:30:15342)
    at new i (file:///C:/Users/xxxx/AppData/Local/Wappler/resources/app/Shared/DMXzone/dmxAppCreator/UI/jQuery/bluebird.min.js:30:7039)
    at e.save (file:///C:/Users/xxxx/AppData/Local/Wappler/resources/app/Shared/DMXzone/dmxAppCreator/UI/wappler_editor_project_options.js:1:1720)
    at r.save (file:///C:/Users/xxxx/AppData/Local/Wappler/resources/app/Shared/DMXzone/dmxAppCreator/UI/wappler_editors_manager.js:1:7368)
    at file:///C:/Users/xxxx/AppData/Local/Wappler/resources/app/Shared/DMXzone/dmxAppCreator/UI/menu.js:1:2441
    at sentryWrapped (C:\Users\xxxx\AppData\Local\Wappler\resources\app\node_modules\@sentry\browser\cjs\helpers.js:92:17)

Fixed in Wappler 6.7.1