You are right 
After logged in, the time showed 2018. Setting up ntp service solved the problem and I was able to log into Jupyter. Anyway, 2.1 is old. I’ll upgrade to 2.5.
Thank you!
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You are right After logged in, the time showed 2018. Setting up ntp service solved the problem and I was able to log into Jupyter. Anyway, 2.1 is old. I’ll upgrade to 2.5.
Thank you!