Add more info to error messages in log

[nordam]

My processing crashed with the following error:

2024-09-22 08:50:53 ERROR Thread-7 (process_file_list) [cli.process_file_list] Cannot load file containing pickled data when allow_pickle=False    

Probably there is something wrong with the image I'm trying to load, but it would be convenient to know the filename.

[emlynjdavies]

Please use log_level = 'DEBUG'
then you will get a filename print out in the form: Chunk {c} starting to process {filename} before the pipeline.run(filename) is called