If you use custom settings in your wallet to adjust token approvals to a certain amount, you may encounter this error. In this case, please navigate to https://etherscan.io/ (or the respective blockchain explorer) and complete the following steps to adjust your token approval amount:
In the Etherscan search bar paste Approval transaction ("tx") hash or your Ethereum wallet address. If you use your Ethereum wallet address, filter by Approve method and screen for a specific token approval you are looking for to modify.
Click on Approval tx hash for specific token you need to adjust approval for transaction details.
In the transaction details window, click on Token Approvals in Transaction Action.
In the Ethereum tokens approval window, connect your Ethereum wallet by clicking Connect to Web3. Make sure that the Approved Spender is the Bebop contract with the following contract address 0x29FBD00940df70cfC5DAD3f2370686991e2BBf5C.
When your wallet is connected, you can adjust your approved amounts by:
Clicking Revoke to remove approvals when they were previously set to Unlimited.
Modifying the amount in Allowance to cover your next trade.