phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('87c3c572b0c7f31306d5a76e0e03dbd8', -1, 1715217837, 1715217837, '0391a33a', -2, 0, 0)

Line : 189
File : sessions.php