reason-vscode@1.7.5 crashing on Mac

reason-vscode@1.7.5 on my Mac is crashing when I open a reason file with error message `The Reason Language Server server crashed 5 times in the last 3 minutes. The server will not be restarted.`

It is working fine with reason-vscode@1.7.4

This could be issue with latest code changes

Reproduce the crash by opening a Reason file with reason-vscode@1.7.5 on a Mac, then compare the behavior with reason-vscode@1.7.4. Start with the reported language-server crash message; the issue is done when the server no longer crashes in the reported setup.

Written by the indexing model from the issue text.