const dexCoreAddress = "KT1...";
const auctionAddress = "KT1...";
const dexCore = await tezos.contract.at(dexCoreAddress);
const operation = await dexCore.methods.set_auction(auctionAddress).send();
senderof the transaction is not current administrator.
412- non payable entrypoint (can't accept TEZ tokens during call of an entrypoint).