Error on refreshing -data problem

[nick_wongth1]

I tried to refreshed my pbi dashboard and follow what they suggested in the table, i cannot see  any null at all, 

• Data source error{"error":{"code":"DM_GWPipeline_Gateway_MashupDataAccessError","pbi.error":{"code":"DM_GWPipeline_Gateway_MashupDataAccessError","parameters":{},"details":[{"code":"DM_ErrorDetailNameCode_UnderlyingErrorCode","detail":{"type":1,"value":"-2147467259"}},{"code":"DM_ErrorDetailNameCode_UnderlyingErrorMessage","detail":{"type":1,"value":"We cannot convert the value null to type Text."}},{"code":"DM_ErrorDetailNameCode_UnderlyingHResult","detail":{"type":1,"value":"-2147467259"}},{"code":"Microsoft.Data.Mashup.ValueError.Reason","detail":{"type":1,"value":"Expression.Error"}}],"exceptionCulprit":1}}} Table: QOL_ASCOF1C_LastMonth.
• Cluster URIWABI-UK-SOUTH-redirect.analysis.windows.net
• Activity IDxxxxxx
• Request IDxxxxxx

anyone could help and some problem similar to this before , highly appreciated!

[Anonymous]

Hi @nick_wongth1 

Can the associated report in dashboard be refreshed normally ? The error message mentions the QOL_ASCOF1C_LastMonth table, is there a problem with the report related to this table ?

Best Regards,
Community Support Team _ Ailsa Tao