Invalid 'tools': expected an array with at least one element, but received an empty array.

To resolve the "Invalid 'tools': empty array" error, you need to ensure that the tools parameter in your API request is not empty. Here are the steps to fix this issue:

• Verify that the tools array is populated before sending the request.

• Ensure that at least one tool is included in the tools array.

• Check your code logic to prevent scenarios where the tools array might be emptied unintentionally.

Here are some key points to consider:

• Always include at least one tool in the tools array.

• Validate the tools array before making the API call to ensure it is not empty.

• Review your code to handle cases where the array might be cleared or left empty.