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 ('cb48ff10dcc4a8e4db3824eacc4236d8', -1, 1540346421, 1540346421, '36a14d1e', -4, 0, 0)

Line : 189
File : sessions.php