Hi Everyone,
The bug
https://www.labkey.org/home/Developer/issues/issues-details.view?issueId=34562 has been resolved and verified, but there have been some changes made for 19.3
The fix here did the following:
1. Removed pageSize from the list of supported options
2. Code changes were made to be tolerant of undefineds being passed in.
3. Charts were added in.
In relation to the example that was used in the original post however isn't a good one to use though since the SiteUsers table that the above call is making doesn't utilize your typical Insert New button, but rather directs a user to a special Add Users page, which is why if you try to use the code example above, it will still generate an error message. That said, if you were to use a different table to view, such as a list, errors will not appear when the grid renders.
Regards,
Jon