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 ('b23cf30da86f9b8f53bc7cf82d2b096f', -1, 1713511173, 1713511173, '12de6c12', -4, 0, 0)

Line : 187
File : sessions.php