Merge pull request #10419 from annando/fatal

Fix fatal error:  Uncaught TypeError: Argument 1 passed to Friendica\Model\Post\Media::existsByURIId() must be of the type int, null given

src/Model/Item.php

@@ -518,7 +518,7 @@ class Item
 	public static function isValid(array $item)
 	{
 		// When there is no content then we don't post it
-		if (($item['body'] . $item['title'] == '') && !Post\Media::existsByURIId($item['uri-id'])) {
+		if (($item['body'] . $item['title'] == '') && (empty($item['uri-id']) || !Post\Media::existsByURIId($item['uri-id']))) {
 			Logger::notice('No body, no title.');
 			return false;
 		}