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 that information, can you share with us the log of the installation? If you didn't reboot your server, you'd find a file called bitrock_installer*.log in the /tmp folder of your system. Please share the last one of this list
ls -alrt /tmp/bitrock_installer*.log