Warning: Undefined variable $id in /customers/3/f/5/dstmk.dk/httpd.www/vis.php on line 13 Warning: Undefined array key "id" in /customers/3/f/5/dstmk.dk/httpd.www/vis.php on line 13 Warning: fopen(http://dstmk.dk/basic.ics): Failed to open stream: HTTP wrapper does not support writeable connections in /customers/3/f/5/dstmk.dk/httpd.www/vis.php on line 18 Fatal error: Uncaught TypeError: fwrite(): Argument #1 ($stream) must be of type resource, bool given in /customers/3/f/5/dstmk.dk/httpd.www/vis.php:19 Stack trace: #0 /customers/3/f/5/dstmk.dk/httpd.www/vis.php(19): fwrite(false, 'BEGIN:VCALENDAR...') #1 /customers/3/f/5/dstmk.dk/httpd.www/vis.php(28): GemFil('http://dstmk.dk...', 'https://calenda...') #2 /customers/3/f/5/dstmk.dk/httpd.www/arrangementer.php(85): include('/customers/3/f/...') #3 {main} thrown in /customers/3/f/5/dstmk.dk/httpd.www/vis.php on line 19