ModuleNotFoundError: No module named 'guestfs' when interpreter_python=/usr/bin/python3 and hypervisor is RHEL 7

[ppetrou]

Having interpreter_python=/usr/bin/python3 causes failure when hypervisor is RHEL 7

An exception occurred during task execution. To see the full traceback, use -vvv. The error was: ModuleNotFoundError: No module named 'guestfs'
fatal: [192.168.1.171]: FAILED! => {"changed": false, "module_stderr": "Shared connection to 192.168.1.171 closed.\r\n", "module_stdout": "Traceback (most recent call last):\r\n File "/home/ansible/.ansible/tmp/ansible-tmp-1587416356.8042424-125516054166866/AnsiballZ_gfs_part.py", line 102, in \r\n _ansiballz_main()\r\n File "/home/ansible/.ansible/tmp/ansible-tmp-1587416356.8042424-125516054166866/AnsiballZ_gfs_part.py", line 94, in _ansiballz_main\r\n invoke_module(zipped_mod, temp_path, ANSIBALLZ_PARAMS)\r\n File "/home/ansible/.ansible/tmp/ansible-tmp-1587416356.8042424-125516054166866/AnsiballZ_gfs_part.py", line 40, in invoke_module\r\n runpy.run_module(mod_name='ansible.modules.gfs_part', init_globals=None, run_name='main', alter_sys=True)\r\n File "/usr/lib64/python3.6/runpy.py", line 205, in run_module\r\n return _run_module_code(code, init_globals, run_name, mod_spec)\r\n File "/usr/lib64/python3.6/runpy.py", line 96, in _run_module_code\r\n mod_name, mod_spec, pkg_name, script_name)\r\n File "/usr/lib64/python3.6/runpy.py", line 85, in _run_code\r\n exec(code, run_globals)\r\n File "/tmp/ansible_gfs_part_payload_eqe28eni/ansible_gfs_part_payload.zip/ansible/modules/gfs_part.py", line 107, in \r\n File "/tmp/ansible_gfs_part_payload_eqe28eni/ansible_gfs_part_payload.zip/ansible/module_utils/guestfish_lib.py", line 3, in \r\nModuleNotFoundError: No module named 'guestfs'\r\n", "msg": "MODULE FAILURE\nSee stdout/stderr for the exact error", "rc": 1}