Added error message when token limit has been reached.

Fixed unit tests failing when calling evict all in the mocked http client.
Added more user friendly exception.

build.gradle

@@ -85,5 +85,5 @@ dependencies {
     testImplementation "org.junit.jupiter:junit-jupiter:$junitVersion",
             "org.mockito:mockito-core:$mockitoVersion",
             "com.github.tomakehurst:wiremock-jre8:$wireMockVersion"
-    testImplementation("com.squareup.okhttp3:mockwebserver:4.4.0")
+    testImplementation 'org.mockito:mockito-inline:3.3.0'
 }

src/main/java/org/web3j/console/account/AccountManager.java

@@ -60,25 +60,31 @@ public void createAccount(String email) {
 
         try {
             Response sendRawResponse = executeClientCall(newAccountRequest);
-            System.out.println(sendRawResponse);
             ResponseBody body;
             if (sendRawResponse.code() == 200
                     && (body = sendRawResponse.body()) != null) {
                 String rawResponse = body.string();
                 JsonObject responseJsonObj =
                         JsonParser.parseString(rawResponse).getAsJsonObject();
+
+                if (responseJsonObj.get("token") == null) {
+                    String tokenError = responseJsonObj.get("tokenError").getAsString();
+                    System.out.println(tokenError);
+                    return;
+                }
                 String token = responseJsonObj.get("token").getAsString();
                 config.setLoginToken(token);
                 System.out.println(
                         "Account created successfully. You can now use Web3j Cloud. Please confirm your e-mail within 24 hours to continue using all features without interruption.");
             } else {
                 System.out.println("Account creation failed. Please try again later.");
             }
-//            client.connectionPool().evictAll();
+
 
         } catch (IOException e) {
-            e.printStackTrace();
+            System.out.println("Could not connect to the server.\nReason:" + e.getMessage());
         }
+        client.connectionPool().evictAll();
     }
 
     protected final Response executeClientCall(Request newAccountRequest) throws IOException {

src/test/java/org/web3j/console/account/AccountManagerTest.java

@@ -1,6 +1,7 @@
 package org.web3j.console.account;
 
 import okhttp3.Call;
+import okhttp3.ConnectionPool;
 import okhttp3.MediaType;
 import okhttp3.OkHttpClient;
 import okhttp3.Protocol;
@@ -19,6 +20,7 @@
 import java.io.PrintStream;
 
 import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.doNothing;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.when;
 
@@ -44,6 +46,7 @@ public static void restoreStreams() {
     public void testAccountCreation() throws IOException {
         OkHttpClient mockedOkHttpClient = mock(OkHttpClient.class);
         Call call = mock(Call.class);
+        ConnectionPool connectionPool = mock(ConnectionPool.class);
         AccountManager accountManager = new AccountManager(new CliConfig("", "", "", "", "", ""), mockedOkHttpClient);
         Request request = accountManager.createRequest(accountManager.createRequestBody("test@gmail.com"));
         Response response = new Response.Builder().protocol(Protocol.H2_PRIOR_KNOWLEDGE).message("")
@@ -54,6 +57,8 @@ public void testAccountCreation() throws IOException {
                 .code(200).request(request).build();
         when(call.execute()).thenReturn(response);
         when(mockedOkHttpClient.newCall(any(Request.class))).thenReturn(call);
+        when(mockedOkHttpClient.connectionPool()).thenReturn(connectionPool);
+        doNothing().when(connectionPool).evictAll();
         accountManager.createAccount("test@gmail.com");
         Assertions.assertTrue(outContent.toString().contains("Account created successfully."));
     }