Before you start the installation:
You can install Parallels Pro Control Panel in one of the following ways:
--assume-yes. The installer sets the value yes to installation queries that require a yes or no response.The following query is set to yes during the installation:
The system check(s) is complete, and has encountered either warnings or errors. If you wish to browse the results, the output has been stored in <log_file_name>. Would you like to continue? ('y'/'n')[n]: