Summary

solidity 0.8.3 do not support custom errors, code won't compile due to that.

Vulnerability Details

Contract uses floating pragma ^0.8.3 which allows using it to compiled with mentioned or greater version. When compiled with 0.8.3, it throws error and won't compile. it's because, custom errors were introduced solidity version 0.8.4 onwards.

Impact

code won't compile and when 0.8.3 used

Tools Used

Manual Review

Recommendations

user ^0.8.4 or fix the pragma to greator than equls to 0.8.4