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 ('10e9921fed36f6586ab23b18d1589aee', -1, 1713537973, 1713537973, '03858d06', 2, 0, 0)

Line : 187
File : sessions.php