phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '0c9f9e2449233d663eb4db49a5917939' for key 1

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('0c9f9e2449233d663eb4db49a5917939', -1, 1715946715, 1715946715, '1277a2cc', 0, 0, 0)

Line : 187
File : sessions.php