Error message

• Notice: Undefined index: s_width in homepage_slider_contents() (line 41 of /var/www/html/pft/pfi/sites/all/modules/homepage_slider/homepage_slider.module).
• Notice: Undefined index: und in homepage_slider_contents() (line 48 of /var/www/html/pft/pfi/sites/all/modules/homepage_slider/homepage_slider.module).
• Notice: Undefined index: und in homepage_slider_contents() (line 48 of /var/www/html/pft/pfi/sites/all/modules/homepage_slider/homepage_slider.module).
• Notice: Undefined index: und in homepage_slider_contents() (line 48 of /var/www/html/pft/pfi/sites/all/modules/homepage_slider/homepage_slider.module).
• Notice: Undefined index: und in homepage_slider_contents() (line 48 of /var/www/html/pft/pfi/sites/all/modules/homepage_slider/homepage_slider.module).
• Notice: Undefined index: und in homepage_slider_contents() (line 48 of /var/www/html/pft/pfi/sites/all/modules/homepage_slider/homepage_slider.module).
• Notice: Undefined index: und in homepage_slider_contents() (line 48 of /var/www/html/pft/pfi/sites/all/modules/homepage_slider/homepage_slider.module).
• Notice: Undefined variable: output in media_details_block_contents() (line 38 of /var/www/html/pft/pfi/sites/all/modules/media_details_block/media_details_block.module).
• Warning: uasort() expects parameter 2 to be a valid callback, function 'my_sort' not found or invalid function name in media_details_block_contents() (line 119 of /var/www/html/pft/pfi/sites/all/modules/media_details_block/media_details_block.module).