A worker process has failed to exit gracefully and has been force exited. This is likely caused by tests leaking due to improper teardown. Try running with --detectOpenHandles to find leaks. Active timers can also cause this, ensure that .unref() was called on them.

Test Suites: 1 failed, 5 passed, 6 total
Tests:       1 failed, 14 passed, 15 total
Snapshots:   0 total
Time:        10.849 s
Ran all test suites.
Cleaning up file based variables
ERROR: Job failed: exit code 1