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 ('b4a19f2d9246084f14bc9c6f1c3d098f', -1, 1713293395, 1713293395, '038583a8', -4, 0, 0)

Line : 187
File : sessions.php