phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '4f49e291d2921dc5bd5032a1dca0d9df' 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 ('4f49e291d2921dc5bd5032a1dca0d9df', -1, 1762504951, 1762504951, 'd849d86b', 18, 0, 0)

Line : 187
File : sessions.php