Improve error message when input_file is missing
When some input_files
is referencing some file that doesn't exist, and
needs to be used to compute some build_id
, we get an error like this,
which can probably be made mode clear:
Use of uninitialized value $fname in -f at rbm/lib/RBM.pm line 805.
Use of uninitialized value $fname in -l at rbm/lib/RBM.pm line 806.
Error: Template Error:
undef error - Path::Tiny paths require defined, positive-length parts at rbm/lib/RBM.pm line 807.