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 ('fc96a86b9e5cbecbb0be36d5851609e8', -1, 1527004642, 1527004642, '36a6f50a', -2, 0, 0)

Line : 186
File : sessions.php