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 ('66d4b6e7a0b4c6f8c4aa51d1d90bc8a6', -1, 1516347934, 1516347934, '36535134', 8, 0, 0)

Line : 187
File : sessions.php