catching JSON decode error for parsing stdout in file validation resu…

…lts messages

Merge pull request #8 from EMBL-EBI-SUBS/SUBS-1271-better-output

Output displays errors for the same input in the same error object.

Merge pull request #7 from EMBL-EBI-SUBS/SUBS-1271-error-output

Fix dependency version due to detected vulnerability

Merge pull request #5 from EMBL-EBI-SUBS/SUBS-1271-error-output

Subs 1271 better error output

Better error handling on isChildTermOf