Facebook could not post to wall facebook error 1367001

This self answer is the result of agonizing over the deprecated facebook sharer url based api, which kept refusing to post the URL I had setup through the sharer URL format. The resultant response was the following no matter what privacy setting I set:

{
    "__ar":1,
    "error":1367001,
    "errorSummary":"Could not post to Wall",
    "errorDescription":"The message could not be posted to this Wall.",
    "payload":null,
    "bootloadable":{},
    "ixData":[]
}

My mess of code. (Yes it breaks every convention known to web development and yes I inherited this code.)

<?php
    $url = urlencode(Domain::getDomain()."/".$details['urlname']);
    $title=urlencode($details['name']);
    $summary=$details['name'];
    $image=urlencode(constant('BASE_IMAGES').'/'.$details['gallery']['listing'][0]['thumb']['src']); 
?>

<a onClick="window.open('http://www.facebook.com/sharer.php?s=100&amp;p[title]=<?php echo $title;?>&amp;p[summary]=<?php echo $summary;?>&amp;p[url]=<?php echo $url; ?>&amp;p[images][0]=<?php echo $image;?>','sharer','toolbar=0,status=0,width=548,height=325'); return false" href="javascript: void(0)"><img src="/site/images/icon-facebook.png" alt="Facebook" border="0"></a>

The official question is as follows: Why does the sharer method of sharing links in facebook result in this error?

Solution

For my case, this was because I had not included the fully qualified URL including the protocol. My PHP generated URL was a mess of concatenation and did not include the protocol. After adding it, the post went through.

I had to change the second line listed above to

    $url = urlencode('http://'.Domain::getDomain()."/".$details['urlname']);

There could be more reasons why Facebook throws this 1367001 Error, but this is at least one thing to check.