PMCORE-2267 Unit test: Failed asserting that exception of type "Exception" is thrown.

tests/unit/workflow/engine/src/ProcessMaker/GmailOAuth/GmailOAuthTest.php

@@ -267,8 +267,9 @@ class GmailOAuthTest extends TestCase
         $result = $gmailOauth->sendTestMailWithPHPMailerOAuth();
         $this->assertTrue($result instanceof PHPMailerOAuth);
 
-        $this->markTestIncomplete('Please solve the error related to Exception');
         $this->expectException(Exception::class);
+        $gmailOauth = new GmailOAuth();
+        $gmailOauth->setFromAccount($faker->email);
         $gmailOauth->setSenderEmail("");
         $gmailOauth->setMailTo($faker->email);
         $gmailOauth->setSendTestMail(1);