[config] config apply-patch generates a log error when op is set to remove

[gpunathilell]

This issue is seen with test_forced_mgmt_routes_update if there is a remove operation for the config apply-patch we see the following log error:
ERR sonic_yang: Data Loading Failed:Invalid JSON data (unexpected value). This issue is not seen with the replace operation, only with removal from the configuration

Method to reproduce

Remove a field from the config db.
Example: rem.json

[
    {
        "path": "/MGMT_INTERFACE/eth0|f0f0::f0f0:aaee:eeee:1ee1~164/forced_mgmt_routes",
        "op": "remove"
    }
]

Run config apply-patch rem.json
The operation executes without issues (configuration is removed from CONFIG_DB and patch is applied successfully) but the log error is seen in the syslog

[xincunli-sonic]

Hi @gpunathilell , can you please share more details, like which version, and is there config dump? If so, can you please share it? Thanks!

[gpunathilell]

Hi @xincunli-sonic Issue was detected in 202411 version of the image, I will check if config dump can be shared

[gpunathilell]

This is the part of the sonic-mgmt code from which the issue is being seen (the config removal using apply-patch) https://github.com/sonic-net/sonic-mgmt/blob/c063c1d3f62590b91c67aa19d028176ddcaee8c3/tests/generic_config_updater/test_mgmt_interface.py#L48