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 ('c462dd3c9e26f3a7ead2fc5b2a2a9e91', -1, 1711627329, 1711627329, '03eea1a5', -11, 0, 0)

Line : 187
File : sessions.php