errors on github page

[albfan]

FYI. This is showed on your github page

Warning: Creating default object from empty value in /home/felixonta/domains/fontanon.org/public_html/wpmu-settings.php on line 45

Warning: session_start(): Cannot send session cookie - headers already sent by (output started at /home/felixonta/domains/fontanon.org/public_html/wpmu-settings.php:45) in /home/felixonta/domains/fontanon.org/public_html/wp-content/plugins/image-gallery-with-slideshow/front_end_setting.php on line 2

Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /home/felixonta/domains/fontanon.org/public_html/wpmu-settings.php:45) in /home/felixonta/domains/fontanon.org/public_html/wp-content/plugins/image-gallery-with-slideshow/front_end_setting.php on line 2