title: Getting "Input string was not in a correct format" with File picker
body: <p>I am trying to pick a file using the following code</p>
  <pre><code>                            FileData fileData = new FileData();
  
                              fileData = await CrossFilePicker.Current.PickFile();
  
                              if (fileData != null)
  </code></pre>
  <p>and getting the following exception</p>
  <pre><code>  at System.Number.ThrowOverflowOrFormatException (System.Boolean overflow, System.String overfl
  
  owResourceKey) [0x00000] in /Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/external/corert/src/System.Private.CoreLib/shared/System/Number.Parsing.cs:1781 
    at System.Number.ParseInt64 (System.ReadOnlySpan`1[T] value, System.Globalization.NumberStyles styles, System.Globalization.NumberFormatInfo info) [0x00016] in /Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/external/corert/src/System.Private.CoreLib/shared/System/Number.Parsing.cs:246 
    at System.Int64.Parse (System.String s) [0x0000a] in /Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/external/corefx/src/Common/src/CoreLib/System/Int64.cs:106 
    at Plugin.FilePicker.IOUtil.GetPath (Android.Content.Context context, Android.Net.Uri uri) [0x000ab] in D:\a\1\s\src\Plugin.FilePicker\Android\IOUtil.android.cs:64 
    at Plugin.FilePicker.FilePickerActivity.OnActivityResult (System.Int32 requestCode, Android.App.Result resultCode, Android.Content.Intent data) [0x00039] in D:\a\1\s\src\Plugin.FilePicker\Android\FilePickerActivity.android.cs:151 
  --- End of stack trace from previous location where exception was thrown ---
  </code></pre>
  <p>and the exception message saying &quot;Input string was not in a correct format&quot;.</p>
  <p>I am trying it for so long, but unable to find the solution.</p>
  <p>Android version - 10</p>