SAP Hybris E-commerce : Send Email in CronJob - cron

Question

I have created a CronJob that works perfectly.
But I want to generate the sending of an email within this Cronjob. I followed a tutorial on the internet.
I start with the creation itemType of ProductsApprovedEmailProcess.
then I created productsApprovedEmailProcess to define the steps be executed by the Process Engine as follow
Then I have added an EmailContext to holds the data to be passed to the email template as follow
public class ProductsApprovedEmailContext extends CustomerEmailContext
{
private String message;
#Override
public void init(final StoreFrontCustomerProcessModel processModel, final EmailPageModel emailPageModel)
{
super.init(processModel, emailPageModel);
if (processModel instanceof ProductsApprovedEmailProcessModel)
{
setMessage(((ProductsApprovedEmailProcessModel) processModel).getMessage());
}
}
public String getMessage()
{
return message;
}
public void setMessage(final String message)
{
this.message = message;
}
}
And I had register ProductsApprovedEmailContext as a bean in Spring as follow
<bean id="productsApprovedEmailContext" class="com.hybris.training.facades.process.email.context.ProductsApprovedEmailContext"
parent="abstractEmailContext"
scope="prototype" >
</bean>
Then I created 2 Velocity templates, one for the email Subject and the other for the Body email-productsapproved-subject.vm and email-productsapproved-body.vm
And the following impex allows you to create RendererTemplates for the Subject and the Body, and attach them to an EmailPageTemplate as follow
$contentCatalog=electronicsContentCatalog
$contentCV=catalogVersion(CatalogVersion.catalog(Catalog.id[default=$contentCatalog]),CatalogVersion.version[default=Online])[default=$contentCatalog:Online]
UPDATE GenericItem[processor=de.hybris.platform.commerceservices.impex.impl.ConfigPropertyImportProcessor];pk[unique=true]
$emailResource=$config-emailResourceValue
$emailPackageName=$config-emailContextPackageName
$lang=en
INSERT_UPDATE RendererTemplate ;code[unique=true] ;contextClass ;templateScript[lang=en,translator=de.hybris.platform.commerceservices.impex.impl.FileLoaderValueTranslator];rendererType(code)[default='velocity']
;email-productsapproved-body ;$emailPackageName.ProductsApprovedEmailContext ;$emailResource/email-productsapproved-body.vm
;email-productsapproved-subject ;$emailPackageName.ProductsApprovedEmailContext ;$emailResource/email-productsapproved-subject.vm
INSERT_UPDATE EmailPage ;$contentCV[unique=true];uid[unique=true] ;masterTemplate(uid,$contentCV) ;approvalStatus(code)[default='approved']
; ;ProductApprovedEmail ;ProductApprovedEmailTemplate ;
And in the Cronjob I added this code !
final ProductsApprovedEmailProcessModel productsApprovedEmailProcessModel = (ProductsApprovedEmailProcessModel) businessProcessService
.createProcess("productsApprovedEmailProcess" + "-" + System.currentTimeMillis(), "productsApprovedEmailProcess");
productsApprovedEmailProcessModel.setMessage("Products approved in csv file");
productsApprovedEmailProcessModel.setSite(baseSiteService.getBaseSiteForUID("electronics"));
productsApprovedEmailProcessModel.setLanguage(CommerceCommonI18NService.getCurrentLanguage());
modelService.save(productsApprovedEmailProcessModel);
businessProcessService.startProcess(productsApprovedEmailProcessModel);
But a acheive this error when I'm strating CronJob using HMC Interface :
Error executing ActionNode with ID [generateProductsApprovedEmail]: HtmlTemplate associated with MasterTemplate of EmailPageModel cannot be null
UPDATE :
Here is my business process :
<process xmlns="http://www.hybris.de/xsd/processdefinition"
start="generateProductsApprovedEmail"
name="productsApprovedEmailProcess"
processClass="com.hybris.training.core.model.process.ProductsApprovedEmailProcessModel"
onError="error">
<action id="generateProductsApprovedEmail" bean="generateProductsApprovedEmail">
<transition name="OK" to="sendEmail"/>
<transition name="NOK" to="error"/>
</action>
<action id="sendEmail" bean="sendEmail">
<transition name="OK" to="removeSentEmail"/>
<transition name="NOK" to="failed"/>
</action>
<action id="removeSentEmail" bean="removeSentEmail">
<transition name="OK" to="success"/>
<transition name="NOK" to="error"/>
</action>
<end id="error" state="ERROR">Something went wrong.</end>
<end id="failed" state="FAILED">Could not send products approved in csv File email.</end>
<end id="success" state="SUCCEEDED">Sent file in email.</end>
After declaring ProductApprovedEmailTemplate (EmailPageTemplate) i got this warn and the mail is not generated :
WARN [TaskExecutor-master-264-ProcessTask [8796715713462]] [GenerateEmailAction] Could not retrieve email page model for ProductApprovedEmail and Electronics Content Catalog:Online, cannot generate email content

Answer 1

Look like, the blog you have followed, it has mentioned each step correctly, but you might be missed something.
Make sure you have followed the below steps correctly.
e.g.
frontendTemplateName should be matched with EmailPageTemplate one
<bean id="generateProductApprovedEmail" parent="abstractGenerateEmailAction">
<property name="frontendTemplateName" value="ProductApprovedEmail"/>
</bean>
Create Email page Template
INSERT_UPDATE EmailPageTemplate ;$contentCV[unique=true];uid[unique=true] ;active ;frontendTemplateName ;subject(code) ;htmlTemplate(code) ;restrictedPageTypes(code)
; ;ProductApprovedEmailTemplate ;true ;ProductApprovedEmail ;email-productsapproved-subject ;email-productsapproved-body ;EmailPage
Create Email Page
INSERT_UPDATE EmailPage ;$contentCV[unique=true];uid[unique=true] ;masterTemplate(uid,$contentCV);approvalStatus(code)[default='approved']
; ;ProductApprovedEmail ;ProductApprovedEmailTemplate ;