Error message

• Deprecated function: Constant PDO::MYSQL_ATTR_USE_BUFFERED_QUERY is deprecated since 8.5, use Pdo\Mysql::ATTR_USE_BUFFERED_QUERY instead in DatabaseConnection_mysql->__construct() (line 334 of /home/smansatu/public_html/site/includes/database/mysql/database.inc).
• Deprecated function: Constant PDO::MYSQL_ATTR_MULTI_STATEMENTS is deprecated since 8.5, use Pdo\Mysql::ATTR_MULTI_STATEMENTS instead in DatabaseConnection_mysql->__construct() (line 346 of /home/smansatu/public_html/site/includes/database/mysql/database.inc).
• Deprecated function: session_set_save_handler(): Providing individual callbacks instead of an object implementing SessionHandlerInterface is deprecated in drupal_session_initialize() (line 245 of /home/smansatu/public_html/site/includes/session.inc).
• Deprecated function: Using null as an array offset is deprecated, use an empty string instead in _block_render_blocks() (line 906 of /home/smansatu/public_html/site/modules/block/block.module).
• Deprecated function: Using null as an array offset is deprecated, use an empty string instead in views_plugin_display->get_plugin() (line 947 of /home/smansatu/public_html/site/sites/all/modules/views/plugins/views_plugin_display.inc).
• Deprecated function: Using null as an array offset is deprecated, use an empty string instead in _block_render_blocks() (line 906 of /home/smansatu/public_html/site/modules/block/block.module).
• Deprecated function: Using null as an array offset is deprecated, use an empty string instead in _block_render_blocks() (line 906 of /home/smansatu/public_html/site/modules/block/block.module).
• Deprecated function: Using null as an array offset is deprecated, use an empty string instead in _block_render_blocks() (line 906 of /home/smansatu/public_html/site/modules/block/block.module).
• Deprecated function: Using null as an array offset is deprecated, use an empty string instead in _block_render_blocks() (line 906 of /home/smansatu/public_html/site/modules/block/block.module).
• Deprecated function: Using null as an array offset is deprecated, use an empty string instead in _block_render_blocks() (line 906 of /home/smansatu/public_html/site/modules/block/block.module).
• Deprecated function: Using null as an array offset is deprecated, use an empty string instead in _block_render_blocks() (line 906 of /home/smansatu/public_html/site/modules/block/block.module).
• Deprecated function: Using null as an array offset is deprecated, use an empty string instead in _block_render_blocks() (line 906 of /home/smansatu/public_html/site/modules/block/block.module).