phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 2

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('50d544b45dd5a2e08af15a49d28224f6', -1, 1728713716, 1728713716, '54ccfc03', -10, 0, 0)

Line : 187
File : sessions.php