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 ('1ae5264363fd67b9c183f0e9f96b8f94', -1, 1713572573, 1713572573, '1276fe5e', 3, 0, 0)

Line : 187
File : sessions.php