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 ('ea0e5c1cdfa415ccb5d32081295fe706', -1, 1714011034, 1714011034, '0395e948', -11, 0, 0)

Line : 187
File : sessions.php