small fix

Author: jtakalai

src/dataunion/DataUnion.ts

@@ -504,7 +504,7 @@ export class DataUnion {
     ): Promise<ContractReceipt> {
         const address = getAddress(memberAddress) // throws if bad address
         const duSidechain = await this.getContracts().getSidechainContract(this.contractAddress)
-        const tx = duSidechain.transferToMemberInContract(address, amountTokenWei)
+        const tx = await duSidechain.transferToMemberInContract(address, amountTokenWei)
         return tx.wait()
     }