Items not importing into exhibits

[rhoadsstevens]

Hello. I have Neatline 2.6.4 installed in an Omeka Classic site, and I can't get Items to import into Neatline exhibits.

When I click the "Neatline" tab, I can then click "Create an exhibit." I fill out the information on that first page and am careful to select OpenStreetMaps so I'm not using Google.

Then, I click "Import Items" and can find Items to import, but after I click "Import Items," I get an error page with no error number.