We have a process for registering using the joomla standard process.
1- user registers on the web site.
2- the validation of the account is done by admin. Please have a look on the screenshots joined. So the user receives a mail to validate his email.
3- the admin receives a mail to activate user account. Here is the link delivered in this email for admin:
https://www.matacapital.fr/fr/?option=com_users&task=registration.activate&token=ccfd6ff03ac3f671f81ae63ea88eede3
When the admin clicks on this link, this launch the website to login in. We got an error that the class JsnHelper is not found.
Thanks
Regards