Prompt error when opening terminal -bash: C: command not found

  linux, question

Debian virtual machine
Prompt for error when opening terminal:
-bash: C: command not found
-bash: D: command not found
Both xshell and the terminal directly in debain report these two errors.
Whether logging in with root or another user, both errors are reported.
The following figure:图片描述

It doesn’t affect the usage, but it makes me feel uncomfortable. I wonder if I changed which configuration file when logging in? I have been working with vim development environment these two days, so I have changed a lot of configuration files.

bash --login -i -x

See which command caused this error.