Running `golines -w *` errors when it encounters go.mod

[echarrod]

I am running:

golines -w --max-len=120 * 

But get an error when this encounteres my go.mod file:
FATAL Error formatting source: exit status 2

I confirmed this by doing:

 golines -w --debug go.mod

[2024-09-30 14:59:11] DEBUG Processing file go.mod
[2024-09-30 14:59:11] FATAL Error formatting source: exit status 2

If I want to run on all go files in my repo, should I be calling the command differently?
Or alternatively, can we restrict golines to only run against *.go files?