When I opened IDA today, It suddenly appeared:

it startled me. What’s going on? Calm down and analyze it. I’m going to open it in the same directory as IDA. See what error reports:

the result can’t be opened, and then I directly open idat64.exe,

there should be a problem with the python path. Open the environment variable and add the following to the user environment variable:

PYTHONHOME  #EVI PATH
C:/Program File/python  #PATH

Then save and open IDA to use