fix: ignore certs state if dest identity is null

lib/providers/substrate_sdk.dart

@@ -259,6 +259,8 @@ class SubstrateSdk with ChangeNotifier {
     final idtyIndexTo = await sdk.webView!
         .evalJavascript('api.query.identity.identityIndexOf("$to")');
 
+    if (idtyIndexFrom == null || idtyIndexTo == null) return {};
+
     final certData = await sdk.webView!.evalJavascript(
             'api.query.cert.storageCertsByIssuer($idtyIndexFrom, $idtyIndexTo)') ??
         '';

lib/providers/wallet_options.dart

@@ -137,7 +137,7 @@ class WalletOptionsProvider with ChangeNotifier {
 
     _showText(String text,
         [double size = 18, bool bold = false, bool smooth = true]) {
-      log.d(text);
+      log.d('$address $text');
       return AnimatedFadeOutIn<String>(
         data: text,
         duration: Duration(milliseconds: smooth ? 200 : 0),

lib/screens/search_result.dart

@@ -80,7 +80,6 @@ class SearchResultScreen extends StatelessWidget {
                     future: searchProvider.searchAddress(),
                     builder: (context, AsyncSnapshot<List?> snapshot) {
                       if (snapshot.connectionState == ConnectionState.done) {
-                        log.d(snapshot.data);
                         if (snapshot.data?.isEmpty ?? true) {
                           return duniterIndexer.searchIdentity(
                               context, searchProvider.searchController.text);

lib/screens/wallet_view.dart

@@ -127,7 +127,6 @@ class WalletViewScreen extends StatelessWidget {
                   future: sub.certState(defaultWallet.address!,
                       pubkey!), // .canCertify(_defaultWallet.address!, pubkey!),
                   builder: (context, AsyncSnapshot<Map<String, int>> snapshot) {
-                    // log.d(snapshot.data);
                     if (snapshot.data == null) return const SizedBox();
                     String duration = '';
                     if (snapshot.data!['certDelay'] != null ||
@@ -162,6 +161,7 @@ class WalletViewScreen extends StatelessWidget {
                         duration = 'months'.tr(args: [months.toString()]);
                       }
                     }
+
                     return Visibility(
                       visible: (snapshot.data != {}),
                       child: Column(children: <Widget>[
@@ -175,7 +175,7 @@ class WalletViewScreen extends StatelessWidget {
                                   color:
                                       const Color(0xffFFD58D), // button color
                                   child: InkWell(
-                                      key: const Key('copyKey'),
+                                      key: const Key('certify'),
                                       splashColor: orangeC, // inkwell color
                                       child: const Padding(
                                         padding: EdgeInsets.only(bottom: 0),