The warning "overflow encountered in double_scalars" occurred while calculating the value of "diff," which is the sum of the product of X_values and the difference between y_values and the predicted value based on the linear equation (X_values multiplied by the slope (m) plus the y-intercept (b)).

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This warning typically means that the calculated value has exceeded the limit of what can be represented by a floating-point number. In other words, the value is too large to be stored in memory. This can occur when the numbers being multiplied together in the calculation are very large.

To address this warning, you may want to consider scaling your data or using a different numerical method that can handle large values. Alternatively, you could try using a different type of data structure or programming language that is better suited for large calculations.