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 ('3a9674dfc2dd389779183a9f120ea033', -1, 1540175620, 1540175620, '36a2766b', 20, 0, 0)

Line : 189
File : sessions.php