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 ('9f9fe6e71dfc6675860e65b2aef151a5', -1, 1711657082, 1711657082, '035081c3', -10, 0, 0)

Line : 187
File : sessions.php