After updating to J3.7.1 and also updating hotspots,
the map gives white page
also my categories are gone in panel.
I still see my 400 spots but category is empty.
Updated from 3.5.4pro to 5.3.6...
after update no maps or categories
5 months 22 hours ago #35973
Something in that migration has gone wrong. 3.5.4 is old...
I think that version 3 was using it's own table to store the categories. In version 4 we've moved the categories to the #__categories table that joomla uses, but it sounds like that didn't happen automatically for you.
Can you post a private ticket with access credentials and I'll have a look.