1. I used Tableau to connect to my organization's instance of Salesforce
2. Made a left join between two tables, and made a Tableau Extract (live connection was disabled for me for some reason) - roughly 300k records
3. I created a couple of visualizations
4. I tried uploading the workbook and data source to the server, with embedded credentials to connect to SF
5. Almost immediately got the following error message
I tried redoing this without the join - with just one table and same error came up again. I am currently set as Site admin, but am not the Tableau Server admin. Is this a problem with the connection to Salesforce, with the Extract, or with the Server settings? I'd be grateful for any suggestions here.