phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'ddfac06e2b9c278841d1e32a8e170db1' 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 ('ddfac06e2b9c278841d1e32a8e170db1', -1, 1738220568, 1738220568, '12769032', -4, 0, 0)

Line : 187
File : sessions.php