Issue
Today when I ran ng test on a project on Karma 4.4.1, I got the following error [karma-server]: UnhandledRejection
and the tests stopped midway - "Executed 26 of 1371". Chrome appears and then disappears and the tests stop.
12 07 2022 11:43:34.087:ERROR [karma-server]: UnhandledRejection
What is causing this error and how can I fix it?
Solution
The solution is to downgrade to Node v14.
This is because Karma (or at least Karma 4.4.1) is incompatible with Node 15 and above - see https://github.com/karma-runner/karma/issues/3570
Answered By - sashoalm
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