Hi, We upgraded the OJS 220.127.116.11 to 18.104.22.168 in the quick submit plugin when we click to add contributors. this error “Failed Ajax request or invalid JSON returned” is occurring. anyone can help in this regard
Did you also upgrade the plugin?
For those types of errors there is almost always a PHP “fatal error” logged in your server’s error log. Please ask your systems administrator to have a look and report back.
@jnugent Thank you for your kind reply