87.1 - Power Query doesn't load your last columns (use InferSheetDimensions) 

Sometimes your Excel file is broken and Power Query doesn't load all your columns. You can manually solve it by opening the file, saving, then closing the file.
You have to do this every time the file updates, so don't do that.
Instead fix the file generation, or as a bandaid you can use InferSheetDimensions.
The learner page where I found the solution: learn.microsof...
00:27 Showing the UsedRange property in VBA
00:52 Turn the file into a zip
01:52 How I found the solution
02:20 Excel.Workbook with a record argument
02:27 InferSheetDimensions-argument
03:15 3 solutions
03:54 Solution in action