phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '25d9c6bc49ec8c9abf6e442b57a2b9bf' for key 'phpbb_sessions.PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('25d9c6bc49ec8c9abf6e442b57a2b9bf', -1, 1776351622, 1776351622, 'd849d833', -4, 0, 0)

Line : 187
File : sessions.php