fixed compilation error

Author: coderReview

src/main/java/com/appirio/tech/core/service/identity/IdentityApplication.java

@@ -233,7 +233,7 @@ public void run(IdentityConfiguration configuration, Environment environment) th
     	UserResource userResource = new UserResource(userDao, roleDao, cacheService, eventProducer, eventBusServiceClient, configuration.getM2mAuthConfiguration().getUserProfiles());
     	userResource.setAuth0Client(configuration.getAuth0()); // TODO: constructor
     	userResource.setDomain(configuration.getAuthDomain());
-		userResource.setSendgridTemplateId(configuration.getContext().get("sendGridTemplateId"));
+		userResource.setSendgridTemplateId(configuration.getContext().get("sendGridTemplateId").toString());
     	// this secret _used_ to be different from the one used in AuthorizationResource.
     	// it _was_ the secret x2. (userResource.setSecret(getSecret()+getSecret());)
 		// we assume this was done to further limit the usability of the oneTimeToken generated in userResource