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 ('8b74b41690dd088bc84a056e688bfdf7', -1, 1490589562, 1490589562, '36ccfc25', -2, 0, 0)

Line : 189
File : sessions.php