I need to use a JSON data source in the next report. I encountered a problem. When I established a relationship in multiple JSON data sources, an error occurred in the preview report.
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The parent Data Source 'root' and the Child Data Source 'root2' is not located in one DataSet and can't be used in the relation 'relation'! You can use the CacheAllData property of a report to cache this Data Source to one DataSet.
The version I use is Stimulsoft Dashboard Web NetCore 2020.5.1
thanks in advance
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