How to get directory for upload file in file picker ionic 3 ios?

Halo
I want to get directory after i get file by file picker on ios

and i got error like this :

this is my code :

this.filePicker.pickFile().then(uri => {
        console.log(uri);
        this.file.resolveDirectoryUrl(uri).then((response: any) => {
          console.log(response)
          response.file((file) => {
            var maxSize = 1048576 * 2;
            var size = file.size;
            var sizeCheck = size < maxSize;
            if (sizeCheck == false) {
              this.service.showAlert('Warning', 'Failed, Max file size is 2 Mb');
            } else {
              console.log(file)
            }
          })
        }).catch(e => console.log(e));

and this is my ionic info:
Ionic:

Ionic CLI : 5.4.16 (/usr/local/lib/node_modules/ionic)
Ionic Framework : ionic-angular 3.9.5
@ionic/app-scripts : 3.2.2

Cordova:

Cordova CLI : 9.0.0 (cordova-lib@9.0.1)
Cordova Platforms : ios 5.1.1
Cordova Plugins : cordova-plugin-ionic-keyboard 2.2.0, cordova-plugin-ionic-webview 4.1.3, (and 17 other plugins)

Utility:

cordova-res (update available: 0.9.0) : 0.8.1
native-run (update available: 0.3.0) : 0.2.9

System:

ios-sim : 8.0.2
NodeJS : v12.16.1 (/usr/local/bin/node)
npm : 6.13.4
OS : macOS Catalina
Xcode : Xcode 11.3.1 Build version 11C504

Thank you for helping

Did you find any solution for this problem