The certificate files seem to be fine now, can you start Apache?
sudo /opt/bitnami/ctlscript.sh restart apache
Please share the output message with us in case it throws any error message. In that case, please run the Bitnami Support tool. It 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.