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 ('9bef1f84c3cd5151f6ec85bb7426c9d5', -1, 1713426192, 1713426192, '1276b8ed', -4, 0, 0)

Line : 187
File : sessions.php