The README file outlines the expected contents and structure for the FIFA 21 complete player dataset. It specifies that datasets for the players' data range from FIFA 15 to FIFA 21 and are expected to include various attributes such as:

- Player personal data (e.g., Nationality, Club, DateOfBirth, Wage, Salary)
- Player positions
- Player attributes for performance across different skill areas (e.g., Attacking, Skills, Defense, Mentality, GK Skills)

To identify the potential issue of a missing column in a CSV file, we will need to examine the CSV files to determine if they align with the outlined expectations in the README, specifically focusing on the consistency of column names across the different yearly datasets. Let's begin by examining the structure (column names) of each CSV file to identify any discrepancies or missing columns.Upon examination of the column names across the three datasets (players_19.csv, players_20.csv, and players_21.csv), there appears to be no missing columns when comparing amongst them. The column names are consistent across all three datasets, with no discrepancies detected in terms of missing columns relative to each other based on the provided hint.

Given the information we have, there are no identified issues regarding a missing column in any of the CSV files when compared against each other. The datasets seem to maintain consistency in their structure, aligning with the expectations outlined in the README document regarding the content and attributes of the player datasets.