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When I try to deploy a solidity smart contract on my substrate node I get the following error:

"Gas estimation failed Gas estimation errored with the following message (see below). The transaction execution will likely fail. Do you want to force sending? Returned error: {"jsonrpc":"2.0","error":"unknown field type, expected one of from, to, gasPrice, maxFeePerGas, maxPriorityFeePerGas, gas, value, data, nonce, accessList at line 1 column 8639","id":339420499546212}". How to solve this problem?

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  • If I send the transaction anyway, I get the following error: creation of CodeWithJoe errored: Returned error: {"jsonrpc":"2.0","error":"[ethjs-query] while formatting outputs from RPC '{\"value\":{\"code\":-32603,\"data\":{\"code\":-32603,\"message\":\"submit transaction to pool failed: Pool(InvalidTransaction(InvalidTransaction::Custom(3)))\"}}}'","id":4447184481249369} May 16, 2023 at 13:11
  • have you tried decreasing the gas_fee ? May 17, 2023 at 5:05
  • @AmitKumarYadav Yes but I get the same error May 18, 2023 at 14:04
  • is this error comes when you try to transfer tokens? May 19, 2023 at 5:13
  • No, it's an error when I try to deploy an evm contract on my substrate node. May 22, 2023 at 14:25

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This error generally occur due to the wrong gas_estimation to get rid of this error you can decrease the gas_feeof your chain or you can use metamask advance options to set the gas_limit manually.you can also decrease the gas_limit given in remix ide 3000000 to 30000. you can see this to customize the gas_limit on metamask or you can simply decrease your gas_fee.

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    Thanks @Amit after decreasing the gas_fee it solves my problem. May 16, 2023 at 11:59

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