BPMN editor sample does not work

I have already answered the GitHub issue that you entered.

Basically, all of the import statements need to be consistent with having (or not having) the “.js” file extension in the “from” string. This is fixed in 2.1.9, but until that comes out in a few days, you can just modify all of your copies of the files that are used or imported by the BPMN sample source files.