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 ('618cd3c28618a90d883800f5c1def6f8', -1, 1526969472, 1526969472, '369edbf8', 15, 0, 0)

Line : 187
File : sessions.php