In the requirements-upgrade-runner.log file, you will see similar entries
2019-02-27T08:59:36.557Z ERROR __main__ ERROR: Fatal error during upgrade REQUIREMENTS. For more details take a look at: /var/log/vmware/upgrade/requirements-upgrade-runner.log
Traceback (most recent call last):
File "bootstrap_scripts/run-preupgrade-checks.py", line 203, in main
commandFactory = getCommandFactory(upgradeParameters, execData, reporter)
File "/usr/lib/vmware/cis_upgrade_runner/bootstrap_scripts/upgrade_commands.py", line 3510, in getCommandFactory
factory = _getLinuxCommandFactory(upgradeParameters, settings, reporter)
File "/usr/lib/vmware/cis_upgrade_runner/bootstrap_scripts/upgrade_commands.py", line 3443, in _getLinuxCommandFactory
guestOpsManager.getTemporaryDirectory()
File "/usr/lib/vmware/cis_upgrade_runner/libs/sdk/proxy.py", line 81, in __call__
ret = self.func(*args, **kwargs)
File "/usr/lib/vmware/cis_upgrade_runner/libs/sdk/transport/guestops.py", line 268, in getTemporaryDirectory
self._temporaryDirectory = dirname(self.platform, tmpFile)
File "/usr/lib/vmware/cis_upgrade_runner/libs/sdk/transport/guestops.py", line 256, in platform
logger.warning(warning, guestFamily, self.vmIp)
NameError: global name 'guestFamily' is not defined