Fatal error: Uncaught Error: Undefined constant "BO_OPTIPNG_LEVEL" in /mnt/web007/e1/33/54490633/htdocs/joomla_03/MyBlitzortung/includes/functions_image.inc.php:469
Stack trace:
#0 /mnt/web007/e1/33/54490633/htdocs/joomla_03/MyBlitzortung/includes/image.inc.php(1092): bo_imageout(Object(GdImage), 'png', '/mnt/web007/e1/...', NULL, 90)
#1 /mnt/web007/e1/33/54490633/htdocs/joomla_03/MyBlitzortung/blitzortung.php(247): bo_get_map_image()
#2 {main}
  thrown in /mnt/web007/e1/33/54490633/htdocs/joomla_03/MyBlitzortung/includes/functions_image.inc.php on line 469