method eth_sendPrivateTransaction does not exist

[ohko4711]

logs:

rpc-1      | INFO [11-26|08:37:27.196] [sendRawTransaction] start to process raw tx uid=403f5479-17d4-42f7-9494-7129e7dc5bad rpc_method=eth_sendRawTransaction txHash=0x3927e1238678a5016ff16e75f068b00717c4f661860aaefd7f5c7ab6b01d0ce0 txHash=3927e1..1d0ce0 timestamp=1,732,610,247 time=2024-11-26T08:37:27+0000
rpc-1      | INFO [11-26|08:37:27.197] [sendRawTransaction] sending raw transaction uid=403f5479-17d4-42f7-9494-7129e7dc5bad rpc_method=eth_sendRawTransaction txHash=0x3927e1238678a5016ff16e75f068b00717c4f661860aaefd7f5c7ab6b01d0ce0 tx=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 fromAddress=0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266 toAddress=0xf6184A9dfdE104945cBf77389C11262b5e906230 txNonce=107,739 txGasPrice=80000000000
rpc-1      | INFO [11-26|08:37:27.199] [sendTxToRelay] sending transaction to relay uid=403f5479-17d4-42f7-9494-7129e7dc5bad rpc_method=eth_sendRawTransaction txHash=0x3927e1238678a5016ff16e75f068b00717c4f661860aaefd7f5c7ab6b01d0ce0 tx=0x3927e1238678a5016ff16e75f068b00717c4f661860aaefd7f5c7ab6b01d0ce0 fromAddress=0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266 toAddress=0xf6184A9dfdE104945cBf77389C11262b5e906230
rpc-1      | INFO [11-26|08:37:27.237] [ProxyRequest] completed                 uid=403f5479-17d4-42f7-9494-7129e7dc5bad timeNeeded=37.909481ms
rpc-1      | INFO [11-26|08:37:27.238] [sendTxToRelay] sending transaction      uid=403f5479-17d4-42f7-9494-7129e7dc5bad rpc_method=eth_sendRawTransaction txHash=0x3927e1238678a5016ff16e75f068b00717c4f661860aaefd7f5c7ab6b01d0ce0 "builders count"=0 is_fast=false
rpc-1      | INFO [11-26|08:37:27.276] [sendTxToRelay] Relay error response     uid=403f5479-17d4-42f7-9494-7129e7dc5bad rpc_method=eth_sendRawTransaction txHash=0x3927e1238678a5016ff16e75f068b00717c4f661860aaefd7f5c7ab6b01d0ce0 error="relay error response: the method eth_sendPrivateTransaction does not exist/is not available" rawTx=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
rpc-1      | INFO [11-26|08:37:27.277] Request finished                         uid=403f5479-17d4-42f7-9494-7129e7dc5bad rpc_method=eth_sendRawTransaction duration=0.081

builder: https://github.com/flashbots/builder

I check it

rpc-endpoint/server/request_processor.go

Line 333 in 06a42c8

_, err = fbRpc.CallWithFlashbotsSignature("eth_sendPrivateTransaction", r.relaySigningKey, sendPrivateTxArgs)

then I change it from eth_sendPrivateTransaction -> eth_sendPrivateRawTransaction works

seems https://github.com/flashbots/builder only support eth_sendPrivateRawTransaction: