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 ('24bfe6d4bea7188bd57f612e2f6931e3', -1, 1730415164, 1730415164, '12bcd1f4', -1280, 0, 0)

Line : 195
File : sessions.php