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 ('c20a49000cc2c6656e1fefa76da70548', -1, 1747663613, 1747663613, '0387e56a', 2, 0, 0)

Line : 190
File : sessions.php