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 ('e5a3f2f3a996fc28a4070a9fba098809', -1, 1519203856, 1519203856, '36c4d745', -1, 0, 0)

Line : 187
File : sessions.php