Error message

• Notice: Undefined index: da in lang_dropdown_language_switch_links_alter() (line 457 of /home/waddensea/d7/sites/all/modules/lang_dropdown/lang_dropdown.module).
• Notice: Undefined index: da in lang_dropdown_language_switch_links_alter() (line 458 of /home/waddensea/d7/sites/all/modules/lang_dropdown/lang_dropdown.module).
• Notice: Undefined index: nl in lang_dropdown_language_switch_links_alter() (line 457 of /home/waddensea/d7/sites/all/modules/lang_dropdown/lang_dropdown.module).
• Notice: Undefined index: nl in lang_dropdown_language_switch_links_alter() (line 458 of /home/waddensea/d7/sites/all/modules/lang_dropdown/lang_dropdown.module).
• Notice: Undefined index: en in lang_dropdown_language_switch_links_alter() (line 457 of /home/waddensea/d7/sites/all/modules/lang_dropdown/lang_dropdown.module).
• Notice: Undefined index: en in lang_dropdown_language_switch_links_alter() (line 458 of /home/waddensea/d7/sites/all/modules/lang_dropdown/lang_dropdown.module).
• Notice: Undefined index: de in lang_dropdown_language_switch_links_alter() (line 457 of /home/waddensea/d7/sites/all/modules/lang_dropdown/lang_dropdown.module).
• Notice: Undefined index: de in lang_dropdown_language_switch_links_alter() (line 458 of /home/waddensea/d7/sites/all/modules/lang_dropdown/lang_dropdown.module).