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 ('29bf9579b94b227b11033707259bf768', -1, 1711625452, 1711625452, '36d0eea0', 5, 0, 0)

Line : 187
File : sessions.php