Couldn't load the data for this visual

Hi eagle0473 -Can you cross check the data types are consistent and that the relationships are properly defined. your calculated field should work both in Power BI Desktop and when published online.review the data sources configurations and do the data refresh in desktop and try

also you modify the calculation as like below and check

DiffDateWinLost =
VAR MaxCloseDate = CALCULATE(MAX(opportunity[NewActualCloseDate]))
RETURN
IF(
NOT(ISBLANK(MaxCloseDate)) && NOT(ISBLANK(Ingaggi[Created].[Date])),
DATEDIFF(Ingaggi[Created].[Date], MaxCloseDate, DAY),
BLANK()
)

Hope it helps

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Hi, eagle0473 

Ensure that the data source is accessible and properly configured in the online environment. Verify that all necessary relationships between tables are properly defined and available in the online version. Make sure that any calculated columns or measures used in the formula are correctly defined and available in the online dataset.
Try refreshing the dataset in the Power BI service to make sure all the data is up to date. Also make sure that you have the necessary permissions to access all the data sources and tables referenced in the report

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Best Regards

Yongkang Hua

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