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 ('997efd9452949a250c57d6760445a005', -1, 1713534550, 1713534550, '127476f4', -8, 0, 0)

Line : 187
File : sessions.php