What's the domain of your site, we will use it to test your site. We have a Support Tool that will gather relevant information for us to debug the issue. Could you please download and execute it on the machine where the stack is running by following the steps described in the guide below?
How to Run the Bitnami Support Tool
Please note that you need to paste the code outputted by the tool in your reply.
Apart from sharing that information, could you please try access your site using a different browser or an incognito window in your current browser?