Assert Exception: _local_apis.size() > api_id:

[luis360]

curl param:
{ "method": "call", "params": [4, "broadcast_transaction", [{ "ref_block_num": 63697, "ref_block_prefix": 3726986570, "expiration": "2020-08-11T07:31:44", "operations": [ [0, { "from": "1.2.1251246", "to": "1.2.1251179", "amount": { "amount": 10000, "asset_id": "1.3.0" }, "memo": [0, "0"], "extensions": [] }] ], "extensions": [], "signatures": ["2006dc2f219be003140cb933946bb067e3fae426424dc5ba8911c13742edb3e2e01192fb0c6a8e97de3141f167b0a0ede8702c56897fb0c8a485005bd72b2e7493"] }]], "id": 1597131074515042000, "jsonrpc": "2.0" }
What is the cause of this and how can I solve it？

[luis360]

curl param:
{ "method": "call", "params": [4, "broadcast_transaction", [{ "ref_block_num": 63697, "ref_block_prefix": 3726986570, "expiration": "2020-08-11T07:31:44", "operations": [ [0, { "from": "1.2.1251246", "to": "1.2.1251179", "amount": { "amount": 10000, "asset_id": "1.3.0" }, "memo": [0, "0"], "extensions": [] }] ], "extensions": [], "signatures": ["2006dc2f219be003140cb933946bb067e3fae426424dc5ba8911c13742edb3e2e01192fb0c6a8e97de3141f167b0a0ede8702c56897fb0c8a485005bd72b2e7493"] }]], "id": 1597131074515042000, "jsonrpc": "2.0" }
What is the cause of this and how can I solve it？

host: api.cocosbcx.net