If other options do not work here, you can delete the .pycharm_helpers folder from the virtual machine. Open an SSH session for your stroller:
Tools > Start SSH Session... > Vagrant at \your\path\to\vagrant
Do the following:
-rf /home/vagrant/.pycharm_helpers/
This will remove the PyCharm helpers. Then you want to reinstall them.
File > Settings > Project: primary > Project Interpreter
Change Project Interpreter to the default interpreter. Click Apply , then go back to the roaming virtual machine and click Apply again.
This should do .pycharm_helpers again.
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