Flutter intl_phone_number_input - getRegionInfoFromPhoneNumber giving error - flutter

Question

I am trying the getRegionInfoFromPhoneNumber function from the intl_phone_number_input Flutter Package (0.7.1 - latest one)
It was functioning before but I was testing it today and it gave this error:
//CODE FROM THEIR PACKAGE
String phoneNumber = '[phone]';
PhoneNumber number = await PhoneNumber.getRegionInfoFromPhoneNumber(phoneNumber);
//ERROR
TypeError: Cannot read properties of undefined (reading 'PhoneNumberUtil')
at getRegionInfo (http://localhost:51866/packages/libphonenumber_web/src/libphonenumber_plugin.dart.lib.js:56:58)
at getRegionInfo.next (<anonymous>)
at runBody (http://localhost:51866/dart_sdk.js:40660:34)
at Object._async [as async] (http://localhost:51866/dart_sdk.js:40691:7)
at libphonenumber_plugin.LibPhoneNumberPlugin.new.getRegionInfo (http://localhost:51866/packages/libphonenumber_web/src/libphonenumber_plugin.dart.lib.js:55:20)
at getRegionInfo (http://localhost:51866/packages/libphonenumber_plugin/src/phone_number_util.dart.lib.js:49:75)
at getRegionInfo.next (<anonymous>)
at runBody (http://localhost:51866/dart_sdk.js:40660:34)
at Object._async [as async] (http://localhost:51866/dart_sdk.js:40691:7)
at PhoneNumberUtil.getRegionInfo (http://localhost:51866/packages/libphonenumber_plugin/src/phone_number_util.dart.lib.js:48:20)
at getRegionInfo (http://localhost:51866/packages/intl_phone_number_input/src/utils/phone_number/phone_number_util.dart.lib.js:158:65)
at getRegionInfo.next (<anonymous>)
at runBody (http://localhost:51866/dart_sdk.js:40660:34)
at Object._async [as async] (http://localhost:51866/dart_sdk.js:40691:7)
at PhoneNumberUtil.getRegionInfo (http://localhost:51866/packages/intl_phone_number_input/src/utils/phone_number/phone_number_util.dart.lib.js:157:20)
at getRegionInfoFromPhoneNumber (http://localhost:51866/packages/intl_phone_number_input/src/utils/phone_number/phone_number_util.dart.lib.js:476:68)
at getRegionInfoFromPhoneNumber.next (<anonymous>)
at runBody (http://localhost:51866/dart_sdk.js:40660:34)
at Object._async [as async] (http://localhost:51866/dart_sdk.js:40691:7)
at PhoneNumber.getRegionInfoFromPhoneNumber (http://localhost:51866/packages/intl_phone_number_input/src/utils/phone_number/phone_number_util.dart.lib.js:474:20)
at upload_data_form._UploadDataFormState.new.<anonymous> (http://localhost:51866/packages/excelit/widgets/remember_me.dart.lib.js:13587:84)
at Generator.next (<anonymous>)
at runBody (http://localhost:51866/dart_sdk.js:40660:34)
at Object._async [as async] (http://localhost:51866/dart_sdk.js:40691:7)
at http://localhost:51866/packages/excelit/widgets/remember_me.dart.lib.js:13531:218
at _RootZone.runUnary (http://localhost:51866/dart_sdk.js:40511:59)
at _FutureListener.then.handleValue (http://localhost:51866/dart_sdk.js:35438:29)
at handleValueCallback (http://localhost:51866/dart_sdk.js:35999:49)
at _Future._propagateToListeners (http://localhost:51866/dart_sdk.js:36037:17)
at [_completeWithValue] (http://localhost:51866/dart_sdk.js:35872:23)
at async._AsyncCallbackEntry.new.callback (http://localhost:51866/dart_sdk.js:35906:35)
at Object._microtaskLoop (http://localhost:51866/dart_sdk.js:40778:13)
at _startMicrotaskLoop (http://localhost:51866/dart_sdk.js:40784:13)
at http://localhost:51866/dart_sdk.js:36261:9
I tried on several valid phone numbers
My code reads an Excel File row by row and creates a Client Object (name, address... phone_num)
//TEMPLIST: [Client A, Mr. Ahmad, ahmad#mindit.com, Lebanon, Beirut, Badaro, 96181816583, -, -]
//phonenumber returned by the string manipulation below is [phone] which should be valid
PhoneNumber number1 = await PhoneNumber
.getRegionInfoFromPhoneNumber((tempList
.elementAt(6)
.substring(0, 1) !=
'+')
? '+${tempList.elementAt(6).replaceAll(' ', '')}'
: tempList
.elementAt(6)
.replaceAll(' ', ''),)
.onError((error, stackTrace) {
failureSnackBar(context,
'Invalid or missing phone_num in ${file.name} row ${row.elementAt(0)!.rowIndex + 1}');
Navigator.pop(context);
breakLoop = true;
return PhoneNumber();
});
This same Excel file worked before and I could get the PhoneNumbers right but now it isn't.
And even if i specify the isoCode it still gives the same error.
Any help would be appreciated!

Answer 1

I forgot to answer this but I forgot to add these in the index.html
<script src="assets/packages/libphonenumber_plugin/js/libphonenumber.js"></script>
<script src="assets/packages/libphonenumber_plugin/js/stringbuffer.js"></script>