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 ('4a10fab2a2129d3f7560766b9a0f95c1', -1, 1713554657, 1713554657, '127548e0', -10, 0, 0)

Line : 187
File : sessions.php