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 ('67b6d64ae25c1477c02bd8caf52a2694', -1, 1730415846, 1730415846, '038d1c74', -9, 0, 0)

Line : 195
File : sessions.php