Seaparator missing 2.6.1 NSLCM

https://forge.etsi.org/rep/nfv/api-tests/blob/2.6.1-fix-plu/SOL005/NSLifecycleManagement-API/NSLCMOperationKeywords.robot

Check HTTP Response Body Json Schema Is
    [Arguments]    ${input}
    ${schema} =    Catenate    ${input}    .schema.json
    Validate Json    ${schema}    ${response[0]['body']}
    Log    Json Schema Validation OK

SEPARATOR argument should be used after Catenate keyword