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 ('d4edfeb5f19df8f83cc1b6f89d3da27d', -1, 1713612898, 1713612898, '12758a2c', -4, 0, 0)

Line : 187
File : sessions.php