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 ('87638f22a37d6b3a29fdb12cd257b243', -1, 1748080291, 1748080291, '03106dc3', 2, 0, 0)

Line : 190
File : sessions.php