Error message

• Notice: Undefined index: www in blocks_mrc_webform_links() (line 143 of /var/www/html/sites/all/modules/custom/blocks_mrc/blocks_mrc.module).
• Warning: Invalid argument supplied for foreach() in blocks_mrc_webform_links() (line 143 of /var/www/html/sites/all/modules/custom/blocks_mrc/blocks_mrc.module).
• Notice: Undefined index: www in nav_mrc_main_menu_markup() (line 96 of /var/www/html/sites/all/modules/custom/nav_mrc/nav_mrc.module).
• Notice: Undefined index: www in nav_mrc_fb_button_render() (line 206 of /var/www/html/sites/all/modules/custom/nav_mrc/nav_mrc.module).
• Notice: Trying to get property 'body' of non-object in block_block_view() (line 247 of /var/www/html/modules/block/block.module).
• Notice: Trying to get property 'format' of non-object in block_block_view() (line 247 of /var/www/html/modules/block/block.module).