phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '340a91fab5750c0d3255d7a071bb1458' 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 ('340a91fab5750c0d3255d7a071bb1458', -1, 1524608996, 1524608996, '365174bb', -4, 0, 0)

Line : 200
File : sessions.php