phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '40ad64f411f24efa73ee8a069e814acb' 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 ('40ad64f411f24efa73ee8a069e814acb', -1, 1550266154, 1550266154, '0352345b', -4, 0, 0)

Line : 174
File : sessions.php