Before changing the permissions of the whole WordPress folder (please note that you will need to recover those permissions later) I'd like to know more about your plugin. For example, does it use a .htaccess file? Please note that we disable them by default and move their information to a main htaccess.conf file.
Apart from that, I'd try changing the permissions of the wp-content folder where the plugins, themes, ... are installed. If that doesn't work, we can try changing all the permissions later
sudo chown -R bitnami:daemon /opt/bitnami/apps/wordpress/htdocs/wp-content
sudo chmod -R g+w /opt/bitnami/apps/wordpress/htdocs/wp-content
Happy to help!
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