kovan – Fail with error ‘SafeMath: subtraction overflow’

I am trying to use the “create” function from an LSP smart contract from the UMA protocol but I can not use it it always returns the “Fail with error ‘SafeMath: subtraction overflow'” error. I am using the Kovan testnet and the smart contract address is: 0xDfF8F001824D6128f6BA16eAB0Fd8d1cc43Ef053

To call this contract there needs to be USDC collateral in my account which I do have (I have around 1500USDC) and KovanEth which I also do have. Not sure what I am doing wrong.

The link to the smart contract launcher: github.com/UMAprotocol/launch-lsp

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