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 ('7bca386b191d75d9fbc36f5e53615bab', -1, 1427552219, 1427552219, '36919442', 17, 0, 0)

Line : 187
File : sessions.php