Warning:  [mysql error 144] Table './galerii/piwigo_sessions' is marked as crashed and last (automatic?) repair failed

SELECT data
  FROM piwigo_sessions
  WHERE id = '0393audu6nnt1rvimc919negpdk8k0'
; in /webserver/virtual/galerii/piwigo/include/dblayer/functions_mysqli.inc.php on line 798

Warning:  [mysql error 3] Error writing file '/tmp/MYBUMrkz' (Errcode: 28)

SELECT DISTINCT(image_id)
  FROM piwigo_image_category
    INNER JOIN piwigo_images ON id = image_id
  WHERE
    1=1
AND (category_id NOT IN (2,16,33,62,67,84,116,123,126,140,142,146,150,179,192,197,201,202,246,272,274,287,288,302,308,314,362,366,373,593,575,577,582,595,600))
  ORDER BY file ASC, id ASC
; in /webserver/virtual/galerii/piwigo/include/dblayer/functions_mysqli.inc.php on line 798

Warning:  [mysql error 144] Table './galerii/piwigo_sessions' is marked as crashed and last (automatic?) repair failed

REPLACE INTO piwigo_sessions
  (id,data,expiration)
  VALUES('0393audu6nnt1rvimc919negpdk8k0','pwg_device|s:7:\"desktop\";pwg_mobile_theme|b:0;',now())
; in /webserver/virtual/galerii/piwigo/include/dblayer/functions_mysqli.inc.php on line 798