phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '39a22f22d3aa1f5220a07a8d0034f77e' 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 ('39a22f22d3aa1f5220a07a8d0034f77e', -1, 1768409973, 1768409973, 'd849d885', -9, 0, 0)

Line : 187
File : sessions.php