phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '12f9e9101f7578e8e8c51c9931f4f9e4' 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 ('12f9e9101f7578e8e8c51c9931f4f9e4', -1, 1714884536, 1714884536, '0392ff7f', 4, 0, 0)

Line : 187
File : sessions.php