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 ('795586a1cb9c87aeb9a4808f42374676', -1, 1713870836, 1713870836, '038fe552', -10, 0, 0)

Line : 187
File : sessions.php