signer.sendTransaction() can be signed successfully but an error is reported, missing from address

[RookieBomb]

Ethers Version
5.7.2

Search Terms
No response

Describe the Problem
I used the signer.sendTransaction() method for swap, and I included all the necessary parameters, including from.
When I used this method to transact, the transaction succeeded, but the method itself reported an error as follows:
{reason: 'missing from address', code: 'INVALID_ARGUMENT', argument: 'transaction', value: {jsonrpc: '2.0', id:1689067341921, result: null}, transactionHash:"********************************"}
By looking up the code, it was found that the error was issued here：

This creates problems, transactions that should theoretically fail succeed, and the flow is blocked

Code Snippet

let transaction = null;
try {
  transaction = await signer.sendTransaction(transactionRequest)
} catch (error) {
  // error: missing from address ....
  console.log("sign failed!", error)
}
// Cannot be executed
if(transaction) {
 const transactionReceipt = await transaction.wait()
}

Errors
{reason: 'missing from address', code: 'INVALID_ARGUMENT', argument: 'transaction', value: {jsonrpc: '2.0', id:1689067341921, result: null}, transactionHash:"********************************"}

Does anyone know why that is?