Error message

• Notice: Undefined offset: 216 in node_gallery_api_get_item_position() (line 825 of /home/tekmap/public_html/sites/all/modules/node_gallery/node_gallery_api.inc).
• Notice: Undefined offset: 216 in node_gallery_api_get_item_position() (line 825 of /home/tekmap/public_html/sites/all/modules/node_gallery/node_gallery_api.inc).
• Notice: Undefined offset: 216 in node_gallery_api_get_item_position() (line 825 of /home/tekmap/public_html/sites/all/modules/node_gallery/node_gallery_api.inc).
• Notice: Undefined offset: 0 in node_gallery_api_get_first_item() (line 607 of /home/tekmap/public_html/sites/all/modules/node_gallery/node_gallery_api.inc).
• Notice: Undefined offset: -1 in node_gallery_api_get_last_item() (line 623 of /home/tekmap/public_html/sites/all/modules/node_gallery/node_gallery_api.inc).