I have several batch files that are run from the Notepad++. Since I’ve recently installed Notepad++ and nppexec, I get this error at the end of execution:

<<< Process finished (PID=8720). (Exit code 0)
(convert without 21)
; about to start a child process: "(convert without 21)"
CreateProcess() failed with error code 2:
The system cannot find the file specified.

I have tested everything, even running empty batch files. This error just keeps lingering on. What is wrong?