topic Re: Error complaining that eventHelper cannot be deleted in ThingWorx Developers

Error complaining that eventHelper cannot be deleted

oskarberntorp — Fri, 10 Nov 2023 22:00:55 GMT

Hi,

I am developing a widget snd I get the bellow error, as I can´t find an obvious explination, I wonder if anyone here knows what it means:
An error occurred while calling destroy for NovotekQRCodeReaderWidget, Id = "NovotekQRCodeReaderWidget-8". TypeError: property "eventHelper" is non-configurable and can't be deleted

Re: Error complaining that eventHelper cannot be deleted

slangley — Fri, 10 Nov 2023 22:02:51 GMT

Hi @oskarberntorp.

Just to clarify, you're creating a widget extension? At what point do you get the error?

Regards.

--Sharon

Re: Error complaining that eventHelper cannot be deleted

oskarberntorp — Mon, 13 Nov 2023 16:02:23 GMT

Hi,

Yes, I build a widget extension.
When I load the mashup builder.

Now, I also get this error when running the mashup, from what I can see, the file the error referes to looks good.

Uncaught SyntaxError: Unexpected end of input (at CombinedExtensions.20231113_155851.js:24462:1)

Kindly

Oskar

Re: Error complaining that eventHelper cannot be deleted

slangley — Mon, 13 Nov 2023 21:13:12 GMT

Hi @oskarberntorp.

So you were able to import the extension without issue? Are you getting the error with any mashup or just the one that uses the extension?

Regards.

--Sharon

Re: Error complaining that eventHelper cannot be deleted

oskarberntorp — Tue, 14 Nov 2023 07:14:18 GMT

Hi Sharon,

The import where successfull.
The error occures on other mashups too (I tried an new empty mashup), even after deleting the mashup containing the widget.

Kindly

Oskar Berntorp

Re: Error complaining that eventHelper cannot be deleted

nmutter — Wed, 15 Nov 2023 17:31:15 GMT

Most likely you have some syntax error in your custom widgets JavaScript code. Please verify your code has no issue.

TWX will take custom widget javascript code and put it into the "CombinedExtension.js" file (therefore the filename) which does throw the error you mentioned. So something will be wrong with your code (I assume). And you also may be able to spot the issue when looking at the file with the error.

Maybe this helps already. If not, I guess we cannot help too much without the widget you created to investigate ourselves. Not sure if you can share it.

Re: Error complaining that eventHelper cannot be deleted

slangley — Thu, 16 Nov 2023 19:18:14 GMT

Hi @oskarberntorp.

Since you are having issues with all mashups, it sounds like you have introduced a library that is conflicting with the ones that come with ThingWorx. You can test this by removing your extension and then check the mashups that aren't configured to use your custom widget, to see if you're still getting errors.

Note: if you try to test your mashup that contains your custom widget after you remove the extension, the mashup builder will remove it from the mashup, so you may want to make a copy of the mashup before doing any further changes or testing on it.

Regards.

--Sharon