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Fixes #638 and #690 by "gracefully" handling errors in getBuild()
might make sense to do this for serverBuild too but it seems to work without
Explanation
When an import error occurs, the express server, for whatever reason, seems to crash unrecoverably.
You can check this by running
sudo lsof -i -P -n | grep LISTEN
after an import error has occurred, the server should not be running on your chosen port anymore.I am not sure why before this PR the error is not caught though and displayed correctly because express has a default error handler that should prevent this from happening. In any case, this PR fixes this issue whatever the underlying reason might be.