Glif nodes: Mainnet endpoint error

[hail100]

post url : https://api.node.glif.io/rpc/v0
body:

{"jsonrpc": "2.0", "method": "Filecoin.StateMinerSectorCount", "params": ["f0807362", [{"/": "bafy2bzacebqsnceqoavguxlrbaomyrpxxiorr2uszsvwkeqdoo3hus56ruk4m"}]], "id": 7878}

return

{"jsonrpc":"2.0","id":7878,"error":{"code":1,"message":"method not supported"}}

@rjan90