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set_compute_unit_limit requires an unknown signer [duplicate]

#latest blockhash latest_blockhash = http_client.get_latest_blockhash(Confirmed).value hash = latest_blockhash.blockhash # Set up tx tx = Transaction(hash) # Add CU … units, I get an error, SignerError: not enough signers Why does this error occur and what's the missing signer needed to add CU limit? …
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set_compute_unit_limit requires an unknown signer

Figured it out thanks to this post. Not enough signers when setting compute units I needed to add the fee payer to the transaction. tx.fee_payer = manager.pubkey()
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