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 ('b5ae688f1b6bdb8920db12259e84d56d', -1, 1713438257, 1713438257, '038bec59', -4, 0, 0)

Line : 187
File : sessions.php