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) VALUES ('b72ea89bdc6bf72e14bd15234944b1bf', -1, 1715939980, 1715939980, '12767a2e', 15, 0)

Line : 158
File : sessions.php