From c03665b7ecb7ea07755dcd4def6fdbb22c1ec152 Mon Sep 17 00:00:00 2001
From: Sophie Schiller <sophie.schiller01@gmail.com>
Date: Mon, 27 May 2024 15:03:51 +0200
Subject: [PATCH] fix frashes on empty schedule url

---
 command/download.php | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/command/download.php b/command/download.php
index 84712ff3..6451047a 100644
--- a/command/download.php
+++ b/command/download.php
@@ -110,7 +110,16 @@ function get_file_cache($conference, $filename)
 
 function download_for_conference($what, $conference, $url, $cache)
 {
-	$info = parse_url($url);
+    if(!isset($url))
+    {
+		stderr(
+			'  !! %s url for conference %s is not set',
+			$what,
+			$conference->getSlug(),
+        );
+        return false;
+    }
+    $info = parse_url($url);
 	if(!isset($info['scheme']) || !isset($info['host']))
 	{
 		stderr(