Error Can not find data record in database table external_fu

It just says OK!!!

Must be fine.

Thanks again.

The file just prints "OK".

This is used to check connection from Moodle, so I wanted to know if file is accesible.
As you can access it fine, there must be something preventing Moodle site from opening this file, and that's why you get the error.

This check is only for helping in debugging, so you don't need to worry about it if last check is all green, though.

Hello Antonio,

I made the changes in content.php as you suggested, but I am still getting the same error

An unexpected error happened: 23604497: Can not find data record in database table external_functions. | DEBUG INFO: SELECT * FROM {external_functions} WHERE name IS NULL [array ( )] | ERRORCODE: invalidrecord

Mine is php 5.5.15 & moodle 3.1

Try something:
instead of changing to: utf-8
change to: iso-8859-1

Sorry Antonio

That didnt work either.
An unexpected error happened: 23604497: Can not find data record in database table external_functions. | ERRORCODE: invalidrecord

Then I don't know what can be happening....
You can try testing Moodle own web services, to see if that is failing too.