phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '4e14fd7c2151344db8e675767792cbd3' 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 ('4e14fd7c2151344db8e675767792cbd3', -1, 1770000970, 1770000970, 'd849d8d8', 1, 0, 0)

Line : 187
File : sessions.php