When trying to use the command make.

[NFTCryptoList]

CXX libbitcoin_server_a-governance.o
CXX libbitcoin_server_a-governance-classes.o
CXX libbitcoin_server_a-governance-object.o
CXX libbitcoin_server_a-governance-vote.o
CXX libbitcoin_server_a-governance-votedb.o
CXX libbitcoin_server_a-main.o
main.cpp: In function ‘void InvalidChainFound(CBlockIndex*)’:
main.cpp:1895:43: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘CBlockIndex*’ [-Wformat=]
printf("Tip = %s\n", chainActive.Tip());
^