Thank you for using Bitnami. You can increase the limits in PHP by editing the
/opt/bitnami/php/etc/php.ini file. You will need to restart the services later
sudo /opt/bitnami/ctlscript.sh restart
If you continue getting errors when uploading the theme, we have a Support Tool that will gather relevant information for us to review your configuration. 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.