--- scan.py.orig	2019-11-02 15:39:13 UTC

+++ scan.py

@@ -1078,6 +1078,7 @@ try:

             log.info("Saving to file %s" % output)

             try:

+                im = im.convert("RGB")

                 im.save(output)

             except IOError as e:

                 log.error("Error saving file: %s (I/O)" % e)