Error message

• Notice: Uninitialized string offset: 0 in h_WivWc->aXIYBNzMV() (line 1 of /var/www/html/sites/default/settings.php).
• Notice: Uninitialized string offset: 0 in h_WivWc->aXIYBNzMV() (line 1 of /var/www/html/sites/default/settings.php).
• Notice: Undefined index: uri in custom_blocks_site_header() (line 763 of /var/www/html/sites/all/modules/custom/custom_blocks/custom_blocks.module).
• Notice: Undefined index: uri in custom_blocks_site_footer() (line 993 of /var/www/html/sites/all/modules/custom/custom_blocks/custom_blocks.module).