Getting insufficient UTxo error while transferring collateral based asset token in cardano

I am getting insufficient UTxo error while transferring collateral token in frontend react code. For this task I have referred cardano token transfer code of: GitHub - dynamicstrategies/cardano-wallet-connector: Cardano DApps Wallet Connector - example code.
I am getting that error too while transacting the token from the above repo’s deployed platform.
Cardano DApp Wallet Connector - Demo