Help me! I cant open my ERPNext on Chrome

Everytime i have to update ERPnext, i have problems.
I tried update and it is showing this error.

When i try localhost on chrome, show this error:


We will be back soon.

Don’t panic. It’s not you, it’s us.
Most likely, our engineers are updating the code, and it should take a minute for the new code to load into memory.

Try refreshing after a minute or two.