It's an assertion that fails, rule 209 from test/jointjs/core/util.js
I found this when running grunt test
as in the readme stated i reported this as a bug
me too,help me
The test uses Courier New font. It is most likely not installed on your device.
i think for future-proofing sake, the second and third options would be best. For now though i will employ the first one.
Have you solved this problem？I installed Courier New font, but it still doesn’t work
This issue is caused by how PhantomJS renders text and it will be resolved in the future by migrating to puppeteer.
Fixed by #1795.
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