I wanted to import tables from EventList 1.0.2 Stable to JEM 2.2.3 - in Joomla 3.9.3 :
JEM > Import: the tables of the eveL's (>800 events) were found. But the import always aborts quite fast with a *Invalid Token*.
Only the categories were imported - but with wrong ID's(!!): because JEM insists on a root category with ID 1. But eveL already had one on ID 1, JEM simply set the ID's of eveL's one counter higher.
But that doesn't seem to cause the token, because this is more of a security message? Sombody knows?
I have set in the php.ini: