Hello
After upgrading Joomla from 3.6.5 to 3.7.3, I am unable to create new events. At step 1, when I click the "Continue" button, nothing happens (button changes but that's all).
In the console, I can see the following JS error: "Joomla is not defined"
I am using an old ES version (1.4.12). I cannot upgrade to ES 2, this is too much work for now, I just need this issue to be fixed.
You can reproduce it on a copy of my production site, check my Site Details.
Thanks