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 ('09cbe7318a1c5caf9f3a132da29f9b60', -1, 1713542171, 1713542171, '030c6c07', -7, 0, 0)

Line : 187
File : sessions.php