The amount of gas used to verify the smart account or paymaster signature was higher than userOp's verificationGasLimit.
Possible Solutions
- Check that the
verificationGasLimitset for the userOp is high enough to cover the gas used for smart account and paymaster verification. - Investigate why the smart account and/or paymaster used more gas than expected using tools like Tenderly.
- Reach out to your bundler provider.