Wrong Error Message Text When Attempting to Open DMN

[philippfromme]

Describe the Bug

Trying to open a non-BPMN file results in an error message with the wrong text.

Steps to Reproduce

1. Try opening a DMN diagram
2. Error message pops up

Expected Behavior

Error message reads "diagram.dmn" is not a BPMN file.

Environment

• Zeebe Modeler Version: 0.9.0

[imrishabh18]

@pinussilvestrus Can I take up this issue?

[pinussilvestrus]

Of course! Feel free to open a PR and/or ask for help if you need some 🚀

[imrishabh18]

What should be the text for the error message then?

[pinussilvestrus]

There is a hint in the issue description

Error message reads "diagram.dmn" is not a BPMN file.

Despite, you can always come up with another solution if you think there is something better.

[vvkpd]

Is this card is ready to pick, i would like to work upon.

[pinussilvestrus]

Feel free to open a PR. There was already work done in this regard: https://github.com/zeebe-io/zeebe-modeler/pull/256, which was not finished.