Can't unlock token, Got an error

As I was following this guide, I got an error:

Error message:

error: Uncaught (in promise) “Redeemer (Spend, 0): The provided Plutus code called ‘error’.\n\nExBudget {\n mem: 13978515,\n cpu: 9991737156,\n}\n\n”
Any idea? Thank you.