Error message

• 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).
• 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).