Dashboard does not load in Drupal 8

When the url /civicrm loads, the dashboard does not appear. Upon looking at the js console log, an error is returned:

GET http://d8.expochicago.local/civicrm/ajax/dashboard?op=get_widgets_by_column&key=e874c995c0d62cbdd61263e1ef42824b 500 (Internal Server Error)

Upon debugging that error in XDebug, the exception returned is:

"DB Constraint Violation - possibly dashboard_id should possibly be marked as mandatory for this API. If so, please raise a bug report"

with the following debug info:

"INSERT INTO civicrm_dashboard_contact (dashboard_id , column_no , is_active ) VALUES ( 1 , 1 , 1 ) [nativecode=1452 ** Cannot add or update a child row: a foreign key constraint fails (`expochic_d8`.`civicrm_dashboard_contact`, CONSTRAINT `FK_civicrm_dashboard_contact_contact_id` FOREIGN KEY (`contact_id`) REFERENCES `civicrm_contact` (`id`) ON DELETE CASCADE)]"

I believe that this is because Civi is trying to insert a new row in the table: civicrm_dashboard_contact, with the values for dashboard_id, column_no & is_active. However, upon looking at the table, it has the column contact_id, which is Not Null. That column also has no default value. Since there is no value being passed on the insert, it returns a foreign key constraint error, since there is no matching contact with the id of null. I have changed it on my local to have the default value of 1 - to match the default user on civi.