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 ('7e62feec31532b66199bf7678cd529fa', -1, 1730419084, 1730419084, '038e72c7', -9, 0, 0)

Line : 195
File : sessions.php