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 ('c111712545c8cff5f5ce0d3c58c4ee60', -1, 1534635130, 1534635130, '36e0dc48', 20, 0, 0)

Line : 187
File : sessions.php