Filter subtree issue

[binayak87]

This is my data:

0 PRIMARY http 0 PRIMARY http ]]>]]>

And this is the rpc with filter:

<nc:rpc xmlns:nc="urn:ietf:params:xml:ns:netconf:base:1.0" message-id="bd24edd5-61c5-47d9-a109-6a747e1da988_syjogqaPYeasd11">
<get_amf_config>

<nrf_access_list/>

</get_amf_config>
</nc:rpc>
]]>]]>

It gives me below error:

protocoloperation-failederrorInvalid expression]]>]]>

Further debugging I saw that no xpath expression is getting created from above rpc:

"2022-01-03 11:54:50 util.py INFO Filtering on xpath expression:"