修复bug

nginx.conf

@@ -64,7 +64,7 @@ http {
                 local current_uri = ngx.var.uri
 
                 local clean_uri = current_uri
-                local prefix = "/fileserver/"
+                local prefix = "/fileserver"
                 if string.sub(current_uri, 1, #prefix) == prefix then
                     clean_uri = string.sub(current_uri, #prefix + 1)
                 end