打不開postman了，如何處理？

Delete the local data

Delete the Postman folder(s), found at the below locations depending on your operating system. 

macOS - Go to Finder (Cmd+Opt+Space) > Go to folder (Shift+Cmd+G) > Paste ~/Library/Application Support/Postman  > hit return > Delete the files.

Windows

Open File Explorer and paste in the Path field

C:\Users\<user>\AppData\Local\Postman and
C:\Users\<user>\AppData\Roaming\Postman 

and delete the files in both locations.

Linux

~/.config/Postman