convert2rhel が "ValueError: too many values to unpack (expected 2)" エラーで失敗する

Issue

convert2rhel は以下のエラーで失敗します。

ERROR - (ERROR) VALIDATE_PACKAGE_MANAGER_TRANSACTION.UNEXPECTED_ERROR: Unhandled exception was caught: too many values to unpack (expected 2)
Please file a bug at https://issues.redhat.com/ to have this fixed or a specific error message added.
Traceback: Traceback (most recent call last):
File "/usr/lib/python3.6/site-packages/convert2rhel/actions/__init__.py", line 393, in run
action.run()
File "/usr/lib/python3.6/site-packages/convert2rhel/actions/pre_ponr_changes/transaction.py", line 46, in run
validate_transaction=True,
File "/usr/lib/python3.6/site-packages/convert2rhel/pkgmanager/handlers/dnf/__init__.py", line 210, in run_transaction
self._perform_operations()
File "/usr/lib/python3.6/site-packages/convert2rhel/pkgmanager/handlers/dnf/__init__.py", line 123, in _perform_operations
name, arch = tuple(pkg.rsplit("."))
ValueError: too many values to unpack (expected 2)