fix required

lib/backend/api_requests/api_calls.dart

@@ -623,13 +623,13 @@ class LoginCall {
 
 class RegisterCall {
   Future<ApiCallResponse> call({
-    final String? name,
-    final String? email,
-    final String? password,
-    final String? token,
-    final String? uuid,
-    final String? tipo,
-    final String? descricao,
+    required final String name,
+    required final String email,
+    required final String password,
+    required final String token,
+    required final String uuid,
+    required final String tipo,
+    required final String descricao,
   }) async {
     final String baseUrl = PhpGroup.getBaseUrl();
 
@@ -642,7 +642,7 @@ class RegisterCall {
       },
       params: {
         'name': name,
-        'email': email?.toLowerCase(),
+        'email': email.toLowerCase(),
         'password': password,
         'token': token,
         'uuid': uuid,