Cannot open file on Mac OS

[ben55j]

Hello,

I am trying this package on MacOs for reading at an .xlsx file located in "./test/example.xlsx" (same level as the lib folder).

Here is my code for getting the file.

testExcel(int` counter) async {

  var file = './test/example.xlsx';
  var bytes = File(file).readAsBytesSync();
  var excel = Excel.decodeBytes(bytes);
  //....
  }

But, for some reason, the app cannot access to it ..and I dont understand why.

Here is the error I get:

[ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled Exception: PathNotFoundException: Cannot open file, path = './test/example.xlsx' (OS Error: No such file or directory, errno = 2)
#0      _File.throwIfError (dart:io/file_impl.dart:675:7)
#1      _File.openSync (dart:io/file_impl.dart:490:5)
#2      _File.readAsBytesSync (dart:io/file_impl.dart:574:18)
#3      testExcel (package:us_manager/main.dart:90:26)
#4      _MyHomePageState._incrementCounter (package:us_manager/main.dart:42:5)
#5      _InkResponseState.handleTap (package:flutter/src/material/ink_well.dart:1183:21)
#6      GestureRecognizer.invokeCallback (package:flutter/src/gestures/recognizer.dart:275:24)
#7      TapGestureRecognizer.handleTapUp (package:flutter/src/gestures/tap.dart:652:11)
#8      BaseTapGestureRecognizer._checkUp (package:flutter/src/gestures/tap.dart:309:5)
#9      BaseTapGestureRecognizer.handlePrimaryPointer (package:flutter/src/gestures/tap.dart:242:7)

Can you help?
Many Thanks
Benjamin