kv_stuff.py

# Change line 138/139 from

#    except AuthenticationError:
#       raise AnsibleError('Invalid credentials provided.')
#to:
    except AuthenticationError as e:
        raise AnsibleError(str(e))
                           
#This will surface the actual exception from azure, instead of just printing a generic one.
#It might be possible to use `(e)` instead of `(str(e))` depending on what param AnsibleError takes. It might provide more info

Glad to help!