I still get the error with 1.0.5. Using Dev tools in chrome i get the following:
23:05:30.833 jquery-3.2.1.min.js?_v=e955797d:4 POST
http://localhost/community/index.php?groups/forum/add&group_id=1 404 (Not Found)
send @ jquery-3.2.1.min.js?_v=e955797d:4
ajax @ jquery-3.2.1.min.js?_v=e955797d:4
ajax @ core-compiled.js?_v=e955797d:41
(anonymous) @ core-compiled.js?_v=e955797d:175
setTimeout (async)
submit @ core-compiled.js?_v=e955797d:174
(anonymous) @ core-compiled.js?_v=e955797d:69
dispatch @ jquery-3.2.1.min.js?_v=e955797d:3
q.handle @ jquery-3.2.1.min.js?_v=e955797d:3