Error when adding an Extension

[hcmca]

I am trying to add an extension and a PHP script to the Control Panel. I have a XML file that is successfully added, but the PHP script keeps failing when trying to start the extension. I am not sure what to add at the SID or the Preferences. My current SID is the path to the .php file. http://domain/@api/dekiwiki/skins/*.php.
Is this correct? I'm sure there is something I am doing incorrectly.
Here's the error when trying to restart.
Array
(
[title] => 500 Error
[message] =>
[response] => Request URI:

Server response:
Array
(
[exception] => Array
(
[coroutine] => Array
(
[frame] => Array
(
[0] => Array
(
[@method] => MindTouch.Dream.DreamService.CreateService_Helper( String path, String sid, XDoc config, Result`1 result)
)

[1] => Array
(
[@method] => MindTouch.Deki.DekiWikiService.PostServiceIdStart( DreamContext context, DreamMessage request, Result`1 response)
)

)

)

[message] => unable to initialize service (blueprint not found)
[source] => mindtouch.dream
[stacktrace] => Array
(
[frame] => Array
(
[0] => MindTouch.Dream.DreamService+<CreateService_Helper >d__19.MoveNext () [0x00000]
[1] => MindTouch.Tasking.Coroutine.Continue () [0x00000]
)

)

[type] => System.Exception
)

)

)

Many thanks!!

[Guerric]

You need to configure your extension as a REMOTE service.

[hcmca]

You need to configure your extension as a REMOTE service.

Guerric, thank you for replying. I have configured it as remote, but still no luck. title] => Not Found (404)
[message] => resource not found
[response] => Request URI:

Where is it trying to reference the Title? No matter what I add in the Title field, I get an error. Is my path/uri correct?
https://www.domain/@api/dekiwiki/skins/php_ext.php

Thanks again!

[Guerric]

The correct URI should be:
https://www.domain.com/skins/php_ext.php

* Assuming you put your extension in the skins folder. I recommend the web/deki/ folder instead.

[hcmca]

Yes, it's in the skins directory (web/deki/ not available?). I changed the url path and this error occurs.
Array
(
[title] => 500 Error
[message] =>
[response] => Request URI:
http://localhost:8081/deki/site/serv...eam.in.origin=

Server response:

)

What does the title and other preferences need to reference? I'm sure I'm not configuring this correctly.
Thanks for your help.

[Guerric]

There isn't an error message in what you pasted. Can you provide a more verbose error message? Check the deki-api.log. It's located in /var/log/dekiwiki/deki-api.log