Uncaught TypeError: Cannot read property 'calcOnDemand' of null

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I'm getting this error when I click outside the spreadsheet, after creating a new blank file from the File tab

What is the problem in this?

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MESCIUS Team On

Thank you for using SpreadJS.
It is difficult to know exactly what is going on based on your description. Do you have a simple code that you can share that replicates the issue.

Just in case, you can set the calcOnDemand option using spread.options.calcOnDemand = false; where spread is the name of your spreadJS instance. Grapecity SpreadJS Team