PyCharm Vagrant Couldn't refresh skeletons for remote interpreter

Question

I configured remote Python interpreter 3 months ago with Vagrant, when I was using it, everything was fine, for the last two days I am receiving Couldn't refresh skeletons for remote interpreter error very frequently, as on the video: http://take.ms/0Mr8b

I am not sure what might be error for this.

Environment: Vagrant Ver.2.0.0

PyCharm 2017.3.3 (Professional Edition) Build #PY-173.4301.16, built on January 11, 2018 Licensed to my name Subscription is active until May 23, 2018 For educational use only. JRE: 1.8.0_152-release-1024-b11 x86_64 JVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o Mac OS X 10.13.3

Answer 1

It is solved by File-> Invalidate Caches & Restart in my case as suggested by youtrack forum

Answer 2

It is solved by cleaning .pycharm_helpers folder on remote interpreter.

rm -rf ~/.pycharm_helpers

Answer 3

I needed to remove the Visible only for this project flag from the Deployment configuration that was attached to the remote interpreter. Then I invalidated the cache and restarted as suggested by the other answer.