The argument type 'String?' can't be assigned to the parameter type 'String' dart code example

Example 1: dart The argument type 'String' can't be assigned to the parameter type 'Uri'

// Uri is needed. It can be built from url:
import 'package:http/http.dart' as http;
response = await http.get(Uri.parse("path_to.php"));

Example 2: the argument type 'string' can't be assigned to the parameter type 'uri'. flutter

More generally, if you previously used http.get(someString), http.post(someString), etc. you instead will need to use http.get(Uri.parse(someString)), http.post(Uri.parse(someString)), and so on. (package:http formerly called Uri.parse internally to convert a String into a Uri for you.)