phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('5f86f2d2f3ba51f6f72e24ff4d64f045', -1, 1715313647, 1715313647, '031664b4', 7, 0, 0)

Line : 189
File : sessions.php