When Moralis code or an API request fails, first compare your request with the current documentation and API reference. Check the product, endpoint, chain, authentication header, request parameters, and HTTP status. Make one small request that reproduces the problem.
If you still need help, contact Moralis support. Include a minimal reproduction, the relevant error or response excerpt, approximate UTC time, and any transaction hash or address needed to investigate. Format code as text and remove API keys, passwords, and private customer data before sharing it.