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Safe ERC-4337 UserOp requires all signatures regardless of threshold #501

Description

@ghadirli

Issue: Safe wallet (threshold 1, owners 2) fails with AA24 signature error
when only 1 signature provided, but works when all 2 owners sign.

Expected: threshold=1 should only need 1 signature
Actual: Requires all owners to sign regardless of threshold

Setup:

  • Safe v1.4.1
  • Base network
  • EntryPoint 0.7
  • Pimlico bundler

Error: "UserOperation reverted with reason: AA24 signature error"
I have followed this, when there I make a 1-out-of-2 multisig and sign with one of the signers, I'll get AA24 signature error, but when I sign with the second signer (even though the threshold is 1) and then send the UserOp, it works.

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