Import OVA to RHV fails with TypeError message

Issue

Import of OVA to RHV fails with following messsage

Traceback (most recent call last):
  File "/root/.ansible/tmp/ansible-tmp-1566911534.59-196625308306435/extract_ova.py", line 108, in <module>                                                   
    extract_disks(sys.argv[1], yaml.load(sys.argv[2]), yaml.load(sys.argv[3]))
  File "/root/.ansible/tmp/ansible-tmp-1566911534.59-196625308306435/extract_ova.py", line 96, in extract_disks                                               
    image_guid = image_mappings[name] if image_mappings else name
TypeError: string indices must be integers, not str