The following guide explains how to configure a custom application for LAMP. Did you follow the steps to configure it?
If so, then you could leave out the part where the Alias directives are set in the
#Alias /myapp/ "/opt/bitnami/apps/myapp/htdocs/"
#Alias /myapp "/opt/bitnami/apps/myapp/htdocs/"
And set the DocumentRoot to your application's folder in the same file:
If that doesn't work, we have a Support Tool that will gather relevant information for us to analyze your configuration and logs. 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 ID that is shown at the end.