Hi @TK12345 ,
As far as I know, there should be a column as a condition for calculated index column, such as [Date],[Value]... and so on. I couldn't find a column which could be condition in your above table. Is [Sort] column a calculated index column in your table and your calculation is heavy or something to calculate and it crashed? I think calculation is based on data model, here I suggest you to try to optmize your data model or your code and try again.
Optimization guide for Power BI - Power BI | Microsoft Learn
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