I have installed Mageplaza SMTP extension in my Magento site (v 2.3.1). The problem I am facing is that I am unable to see its configuration page when I try to access it from
Stores >> Configuration >> Mageplaza >> Smtp
The problem does not happen only with the SMTP extension. I have tried Google Recaptcha of Mageplaza and it is showing me the same issue.
Instead of showing the configuration page in the backend it's showing a blank page.