num_samples should be a positive integer value, but got num_samples=60

As an AI language model, I can only provide possible reasons for this error. However, I would need more context to provide a specific solution. Here are some possible reasons for this error:

1. The variable "num_samples" is not defined properly. Check if you have declared it as an integer value and if it has a positive value.

2. The function or method you are using expects "num_samples" to have a positive integer value, but you are passing a different type of value or an invalid value. Make sure you are passing the correct type of value to the function or method.

3. There might be a syntax error in your code that is causing the "num_samples" variable to have an unexpected value. Check your code for any syntax errors and fix them.

4. There might be an issue with the data you are working with. Check if the data you are using is valid and if it contains the expected number of samples.

If none of these solutions work, please provide more context, and I will try to provide a more specific solution.