Doing the a overcloud upgrade the following error was seen:

2024-08-06 13:00:59,780 p=850352 u=stack n=ansible | 2024-08-06 13:00:59.779811 | 1110c985-b930-00bc-07cb-00000000ffb2 |      FATAL | Reload custom nftables ruleset files | compute-0 | error={"msg": "The conditional check '(nft_ruleset is defined and nft_ruleset is changed) or (nftables_flushed is defined and nftables_flushed.rc == 0)' failed. The error was: error while evaluating conditional ((nft_ruleset is defined and nft_ruleset is changed) or (nftables_flushed is defined and nftables_flushed.rc == 0)): 'dict object' has no attribute 'rc'\n\nThe error appears to be in '/usr/share/ansible/roles/tripleo_nftables/tasks/run.yml': line 23, column 3, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n# This prevents accidental lock-outs.\n- name: Reload custom nftables ruleset files\n  ^ here\n"}