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 ('e46e61aca8a269bf62f658140b4ff0d6', -1, 1709485604, 1709485604, '2cdc3eb7', -2, 0, 0)

Line : 187
File : sessions.php