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 ('4fcfd7f7d873c3e3d8c23864d7771f48', -1, 1713952051, 1713952051, '038df4c9', 7, 0, 0)

Line : 187
File : sessions.php