fix: if we have an error throw before we try to read anything

src/backend/providers/ipfs.ts

@@ -62,11 +62,11 @@ export default class IPFSProvider implements ContentProvider {
           err = "404";
         }
       }
+    }
 
     if (err) {
       throw new Error(err);
     }
-    }
 
     let bufferRead = 0;
     const fileTypeBufferLength = 4100;