EPL Online Tool from Esper Tech gives a status 0

Question

I am testing the Esper EPL Online Tool with the default example written on the form. However, when I click the "Submit" button, I only get a pop up with the message "Status 0".

Should the example run as it is or am I missing something? Is there a problem with the online tool?

Thanks in advance.

Answer 1

So, it seems it had something to do with the firewall set by the university network. I tried accessing it from the outside and it works perfectly. Thanks for your help.