Studio Por System.AggregateException following conversion from 10.0.0 to 10.1.1

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Hello, I have this error in Studio Pro when building the project following a conversion of my app from 10.0.0 to 10.1.1 : System.AggregateException: One or more errors occurred. (Value cannot be null. (Parameter 'key'))   No idea where it comes from, anyone can help please ? Thank you
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1 answers
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This is unfortunately a bug caused by an improvement in 10.1.0 (see the forth bullet here ), a fix is coming in 10.2.0. What might be causing it, it’s a data grid widget containing an edit/create button which passes a page parameter for its selection page, unfortunately there’s no work around for this combination.

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