Variable shadowing occurs when a local variable has the same name as a state variable. This is discouraged as it reduces the readability of the code and is prone to errors. Best practice is to avoid shadowing not only in a given contract, but also in its inheriting contracts.
symbol constructor arguments shadow inherited state variables from
CommunityToken in the following contracts:
This was not found to cause any bugs, but does inhibit the readability of the contract.
Rename the constructor arguments and their usages to
symbol_ in the above contracts to eliminate variable shadowing.