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 ('49d2d44f6efb481000b8e03ed2c44c45', -1, 1713901993, 1713901993, '12e318d1', -9, 0, 0)

Line : 187
File : sessions.php