Intellij doesn't start anymore on Linux vm.

IntelliJIdea2017.2

The last time it started, it seemed to be hanging while it was "Scanning files", the whole vm was hanging.

So I restarted the VM. When I ran the idea script again, I get:

Traceback (most recent call last):
  File "/usr/local/bin/idea", line 106, in <module>
    if not try_activate_instance(ide_args):
  File "/usr/local/bin/idea", line 62, in try_activate_instance
    port = int(pf.read())
ValueError: invalid literal for int() with base 10: ''