function insert(AddressSet storage set_, uint256 index_, address valueToInsert_ ) internal returns ( bool ) { return insert( set.inner, index, bytes32(bytes20(, uint256(valueToInsert_)))); } error is in this line ^^^^
If you want to compile your code, you should create a struct data type that only contains a uint.
https://docs.soliditylang.org/en/v0.4.24/frequently-asked-questions.html