On test moodle server, different from the production one, Web Services is under Server instead of Plugins. This wasn't be problem but after creating empty web service, when I click the Add Function, there is an error as below:
In addition, the same error also appers when I click the web service test client page under Development.
I tried to clean cache as suggested on some forums, but haven't solved the problem yet.
Could you help?
Thanks in advance.