Input contains NaN, infinity or a value too large for dtype('float64')' when trying to perform a groupby operation on my DataFrame. Here's my code snippet: Code: import pandas as pd # Load data from CSV data = pd.read_csv('data.csv') # Perform groupby operation grouped = data.groupby('category')['value'].sum() I've checked for NaN or infinity values in 'value' column using data['value'].isnull().sum() and data['value'].isinf().sum() which both returned 0. What could be causing this error and how can I resolve it?