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 ('58d96a3760e9e2e0a18e7b94de78d8d1', -1, 1713500133, 1713500133, '1276e269', 2, 0, 0)

Line : 187
File : sessions.php