phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('1280ea61069a21637118f2f8b5263f56', -1, 1713526881, 1713526881, '03858d06', -11, 0, 0)

Line : 187
File : sessions.php