revert Error: The called function should be payable if you send value and the value you send should be less than your current balance.

[ali-sheikh]

I'm running into an error when I run Issuer.sol in Remix IDE. It could be a problem with the my flow through the contract. Below are the steps I'm taking:

1. Import Issuer.sol and all the dependencies to Remix.
2. deploy Issuer.sol
3. Run function initialize(uint256 _certificateTopic, address _registry) pass in 010101 for _certificateTopic and msg.sender for _registry
4. Run function requestCertification(bytes calldata _data) external returns (uint256) pass in 0x00 for _data and verify "_id":1 was issued.
5. Run function approveCertificationRequest(uint256 _requestId, uint256 _value) public returns (uint256) pass in _id = 1 and _value = 200

Getting the following error:

Note: The called function should be payable if you send value and the value you send should be less than your current balance.

When I debug, the error comes from Registery.sol following function:

function _validate(address _verifier, bytes memory _validityData)

In this case I see: _owner is being passed in for _verifier and abi.encodeWithSignature("isRequestValid(uint256)",_requestId) for _validityData

Any assistance is appreciated!