adding method to extract separately string, instead of parse

src/requester.rs

@@ -19,6 +19,6 @@ impl Requester {
         req: Request<Incoming>,
     ) -> Result<String, Box<dyn Error + Send + Sync>> {
         let body = req.collect().await?.to_bytes();
-        Ok(String::from_utf8_lossy(&body).to_string())
+        Ok(String::from_utf8(body.to_vec())?)
     }
 }