phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '850f7fd7e4895a8cce4d658cb595b3c4' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('850f7fd7e4895a8cce4d658cb595b3c4', -1, 1781817080, 1781817080, 'd849d964', 4, 0, 0)

Line : 187
File : sessions.php