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 ('3dc6783bbc7f8146bfb2b1ad5187b9ad', -1, 1513081135, 1513081135, '36eaff1d', 0, 0, 0)

Line : 211
File : sessions.php