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 ('f7dd3f7251d983f74eebdb98274a0f86', -1, 1715081893, 1715081893, '12ddbb79', -4, 0, 0)

Line : 189
File : sessions.php