"Retrieving available bundles failed" is observed with below message in Bundle Management:Encountered fetching http://127.0.0.1/lcm/inventory/upgrades.api - Target VCF version 5.2.1.0 is lower than source VCF version 5.2.2.0

VMware Cloud Foundation 5.x
Please contact Broadcom Support for assistance and refer Knowledge Base article 409707.
This issue may also occur if a "Planned Patching" task is set for SDDC version 5.2.1.0, while the environment is already running version 5.2.2.0. Please cancel the planned patching on the Workload/Management domain.