phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 2

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('2f5c5456ff2434ff7d38d26b7d05d2c9', -1, 1711707340, 1711707340, '54ccfc03', -9, 0, 0)

Line : 187
File : sessions.php