phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '9d8425965358fc38fabb66c23640145a' 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 ('9d8425965358fc38fabb66c23640145a', -1, 1553420140, 1553420140, '36ecf655', 0, 0, 0)

Line : 187
File : sessions.php