When running the API example: PCB Sales I get an error message: "Cannot read property 'emit' of undefined" - Please help.

 Thanks for submitting a support ticket and providing the sample screen capture.  Here's a quick tutorial I created using the sample API example (Automated PCB Quotes).

https://numericalsoftware-update.s3.us-east-1.amazonaws.com/2025-06-05_20-21-20-api-genquote.mp4

When performing a google search "Cannot read property 'emit' of undefined", here's the response

https://stackoverflow.com/questions/70328769/typeerror-cannot-read-properties-of-null-reading-emit

https://github.com/jsdom/jsdom/issues/1507

Commonly caused by wrong this. Add the arrow lambda syntax =>

  private onStateChangeEvent = (event: any) => {

    console.log("reached here: " + event);

    this.myEmitter.emit(1); // now correct this

  }  

Note:  The demo example is in plain HTML, so I believe the issue may be with the $emit... is related to your vue.js source code?

Thanks again, and please let me know your results.

Best regards,

Simon

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