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 ('0819f19e8caa0771297a7b97741e7e56', -1, 1737631788, 1737631788, '12bc0f9f', -9, 0, 0)

Line : 187
File : sessions.php