Are you using any plugins or custom scripts on create issue step ?
Seems like the error is due a plugin or a custom script. You can confirm by try creating issue after disabling all plugins used in create step one by one.
You must be a registered user to add a comment. If you've already registered, sign in. Otherwise, register and sign in.
You must be a registered user to add a comment. If you've already registered, sign in. Otherwise, register and sign in.