phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1114 The table 'phpbb_sessions' is full

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('8021834de5e82e98194e6738cc480efa', -1, 1524455727, 1524455727, '6b1630f3', -1, 0, 0)

Line : 187
File : sessions.php