phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '1595f08d922bdaec5177277bca50a304' 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 ('1595f08d922bdaec5177277bca50a304', -1, 1550609753, 1550609753, '0352345b', 21, 0, 0)

Line : 198
File : sessions.php