Software error:

17/04/2021 14:18:24SYS=> invivo , USER=anon ,ERR=> ============== Can't open /usr/local/pagal3/SYS/invivo/mySess/_S5wqDZlVtclz8KoSxsQ7SWD0d5fQF9pVo2 for write: No space left on device  , LOG file : /usr/local/pagal3/SYS/invivo/error_logs/error_Anonymous_17_04_2021.log
 
 TDQ=$VAR1 = {
          'UPLOAD_FILE' => 0,
          'USER_GRP' => 2,
          'USER_ID' => 0,
          'LANG' => 'BG',
          'ACTION_PARAMS' => [],
          'CGI' => bless( {
                            '.fieldnames' => {},
                            '.charset' => 'ISO-8859-1',
                            'use_tempfile' => 1,
                            '.parameters' => [
                                               '!BOOKS'
                                             ],
                            'escape' => 1,
                            'param' => {
                                         '!BOOKS' => [
                                                       '1071'
                                                     ]
                                       }
                          }, 'CGI' ),
          'USER' => '',
          'IN' => {
                    'LANG' => 'BG',
                    'ACTION' => 'html_open',
                    'BUTTON' => '!BOOKS=1071',
                    'ORDER_PAGE' => 1,
                    'BACK' => '!BOOKS=1071',
                    'RECALC' => 1,
                    'LANG_ID' => 26,
                    'CALL_METH' => 'html_loader',
                    'REF' => 1618658304,
                    'ID' => '1071'
                  },
          'USER_ACC' => {
                          '2' => 29
                        },
          'USER_DATA' => 0,
          'TRD' => {
                     '' => {},
                     '***' => {},
                     'METHOD_ERROR' => {
                                         'ALL' => '<<Error: Call admin!>>'
                                       }
                   }
        };

 GTES=$VAR1 = {
          'LOAD_FILE' => {
                           'ID' => 1071,
                           'HTML' => 'filmi_single'
                         }
        };

It's not a bug, it's a feature!