Error When Refreshing Workbook in One Drive that uses Power Query

I've uploaded an excel workbook that is linked to sql server database and it refreshes fine when I open it in excel however when I try to refresh it in one drive it give me the following error:

Connection: Query - Date_Post Date 
Error: COM error: Microsoft.Sql.Analysis.ASOnPremisesDataAccess; Failed discovery for connection string provider=Microsoft.Mashup.OleDb.1;data source=$EmbeddedMashup(c993ccc5-644b-4e04-9a90-c85084566c43)$;location="Date_Post Date". 
A connection could not be made to the data source with the DataSourceID of 'c133b540-5203-45e2-9a3d-c2f65e1d45e1', Name of 'Query - Date_Post Date'. 
An error occurred while processing table 'Date_Post Date'. 
COM error: 

I need it to refresh so I can upload this workbook to my powerbi app. I've uploaded other similar workbooks and they all refresh fine. Can anyone tell me why I'm getting this error message?

Thanks!