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 ('47b3ca800ec3a8b602ac80a0cf37274c', -1, 1713898472, 1713898472, '039102b8', -4, 0, 0)

Line : 187
File : sessions.php