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 ('620f7fff550fc9c20d943c6a8f114913', -1, 1737559302, 1737559302, '12dc5560', -9, 0, 0)

Line : 187
File : sessions.php