I have a lot of relationships in my Neo4j Database for which I have to rename labels. As the number is quite high (close to 13 million), I am processing parallelly for faster execution. I believe my Cypher Query is correct, but a weird error is getting thrown by the system:

Error:

{
  "Invalid input 'CALL': expectedrn  "!="rn  "%"rn  "*"rn  "+"rn  "-"rn  "/"rn  "::"rn  "<"rn  "<="rn  "<>"rn  "="rn  "=~"rn  ">"rn  ">="rn  "AND"rn  "AS"rn  "CONTAINS"rn  "ENDS"rn  "IN"rn  "IS"rn  "OR"rn  "STARTS"rn  "XOR"rn  "^"rn  "||" (line 3, column 6 (offset: 83))rn"     CALL apoc.refactor.rename.type("OLD_LABEL", "NEW_LABEL",r)"rn      ^": 1328
} 

I ran this cypher query.

Cypher Query:

CALL apoc.periodic.iterate(
    'MATCH ()-[r:OLD_LABEL]->() RETURN r',
    'WITH r LIMIT 10000
     UNWIND r
     CALL apoc.refactor.rename.type("OLD_LABEL", "NEW_LABEL",r)',
    { batchSize: 10000, parallel: true }
)

Is there something I am missing out or doing it wrong? Also what can be other possible ways to do this job?