phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'fe79aaf7d2b5d8e8c780cda605d4fa0c' for key 'phpbb_sessions.PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('fe79aaf7d2b5d8e8c780cda605d4fa0c', -1, 1770594628, 1770594628, 'd849d821', 2, 0, 0)

Line : 187
File : sessions.php