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 ('23c7c97d85a861ea2631384284971c24', -1, 1713978064, 1713978064, '038ff453', 4, 0, 0)

Line : 187
File : sessions.php