The code returns the following error:

Error: Could not load /grid-texture.png: undefined

  at HTMLImageElement.l (three)

Revise the code to address the error.

this is a great start. i want to make a few changes

• cells of a spreadsheet are typically wider than they are long.
• typically (but not always) the edges in spreadsheets follow a pattern. One column might share the same formula for all it's cells, and it might reference the cell above and the cell 2 rows over. i want to be able to see these patterns