多个文档选择器未在 react native 中的服务器上上传

问：

我正在使用react native文档选择器并选择要上传到服务器上的多个文档。我也在使用formData上传文件。但是在后端，我的文件没有上传。我从我这边打得最好。如果有人知道解决方案，请指导。

const selectMyFiles = async () => {
    try {
      const results = await DocumentPicker.pick({
        copyTo: 'documentDirectory',
        allowMultiSelection: true,
        type: [
          DocumentPicker.types.pdf,
          DocumentPicker.types.docx,
          DocumentPicker.types.images,
        ],
      });
      let documents = [];
      results.forEach(result => {
        const {name, uri, size, type, fileCopyUri} = result;
        const maxFileSize = size / 1048576;
        if (maxFileSize <= 2) {
          setSelectedFiles([
            ...selectedFiles,
            {name, uri, size, type, fileCopyUri},
          ]);
          documents.push({
            uri: uri,
            type: type,
            size: size,
            name: name,
            fileCopyUri: fileCopyUri,
          });
          setModalValue(false);
        } else {
          Alert.alert('Max File', 'Maximum file size is 2MB', [
            {
              text: 'Change',
              onPress: () => selectOneFile(),
              style: 'cancel',
            },
          ]);

          return false;
        }
      });

      setFilesInAction(documents);
 
    } catch (err) {
      if (DocumentPicker.isCancel(err)) {
        alert('Canceled from single doc picker');
      } else {
        //For Unknown Error
        alert('Unknown Error: ' + err);
        throw err;
      }
    }
  };


const onPressSubmit = () => {
    const formData = new FormData();
    formData.append('remarks', inputContactState);
    formData.append('category_id', categoryId);
    formData.append('documents[]', filesInAction);
    dispatch(contactComplaintAction(formData));
  };