I only see this warning message in the Apache’s log that doesn’t seem related to the Workflow functionality.
[Sat Sep 19 14:23:19.833161 2020] [proxy_fcgi:error] [pid 1147:tid 140686317795072] [client 192.168.1.107:57613] AH01071: Got error 'PHP message: PHP Warning: Use of undefined constant HIGHLIGHT_HOME_FOLDER_ENABLE - assumed 'HIGHLIGHT_HOME_FOLDER_ENABLE' (this will throw an Error in a future version of PHP) in /opt/bitnami/apps/processmaker/htdocs/workflow/engine/methods/cases/casesMenuLoader.php on line 27', referer: http://192.168.1.106/sysworkflow/en/classic/cases/main_init
However, as this seems to be a specific issue of the application, can you ask in the official forums of the application to get more information about how to debug the issue? The app’s developers will probably gave you some information about how to resolve it too.
Do not hesitate to write us back if you have any other questions regarding the solution or if there is a problem with the Bitnami configuration.