title: React fine uploader not displaying thumbnails and progress?
body: <p>I have trouble setting react-fine-uploader to work properly. I'm using react-fine-uploader low level components, and after I choose images thumbnails won't show although I've done everything that docs say.</p>
  <p>Here are versions I'm using</p>
  <pre><code>&quot;fine-uploader&quot;: &quot;^5.16.2&quot;,
  &quot;fine-uploader-wrappers&quot;: &quot;^1.0.1&quot;,
  &quot;react-fine-uploader&quot;: &quot;^1.1.1&quot;,
  </code></pre>
  <p>Here is my uploader setup:</p>
  <pre><code>const uploader = new FineUploaderTraditional({
    options: {
      chunking: {
        enabled: isChunkedUpload
      },
      request: {
        method: &quot;POST&quot;,
        endpoint: `${process.env.REACT_APP_API_URL}/api/images`,
        customHeaders: { Authorization: `Bearer ${accessToken}` },
        filenameParam: &quot;name&quot;,
        uuidName: &quot;id&quot;,
        totalFileSizeName: &quot;size&quot;,
        inputName: &quot;image&quot;
      },
      multiple: true,
      callbacks: {
        onComplete: (id: number, name: string, response: object) =&gt; {
          console.log(id, name, response);
        },
        onSubmitted: (id: number, name: string) =&gt; {
          const newSubmitedFiles = submitedfiles;
  
          newSubmitedFiles.push(id);
          setSubmittedFiles(newSubmitedFiles);
        },
        onError: (id: number, name: string, errorReason: string, xhr: any) =&gt; {
          console.log(id, errorReason, xhr);
        }
      }
    }
  });
  </code></pre>
  <p>And here are components that I'm using:</p>
  <pre><code>&lt;Dropzone
    className=&quot;dropzone&quot;
    style={{ backgroundColor: isDragOver ? &quot;red&quot; : &quot;&quot; }}
    uploader={uploader}
    multiple
    onDropError={(errorCode: string, errorData: string) =&gt;
      console.log(errorCode, errorData)
    }
  &gt;
    &lt;span className=&quot;dz-message&quot;&gt;Drop Files Here&lt;/span&gt;
  
    {submitedfiles.length
      ? submitedfiles.map((id) =&gt; (
          &lt;div className=&quot;dz-preview&quot; key={id}&gt;
            &lt;Thumbnail
              className=&quot;dz-image&quot;
              id={id}
              fromServer={false}
              uploader={uploader}
            /&gt;
            &lt;CancelButton id={id} uploader={uploader} /&gt;
          &lt;/div&gt;
        ))
      : null}
  &lt;/Dropzone&gt;;
  </code></pre>