There are no logs, I’m afraid.
Do you know how to open a cmd window? Just start the cmd.exe
then paste the path to the bat file into it, like so:
> cd "C:\Users\myself\Desktop"
+Enter (you’ll have to adapt the path to the bat file, to where it’s stored on your machine)
then type in the filename of the bat file and press Enter again
Since you have opened the cmd window beforehand, it will now stay open, so you can see the error message which the bat file is throwing.