Hi Robert,
The error message means that the SSIS runtime or components installed on your development workstation are running under an expired trial license.
Even though you have a valid SQL Server Enterprise 2017 license on your server, the SSIS tools and runtime on your local machine (where Visual Studio 2019 is installed) need their own licensed version of the Integration Services runtime to run packages outside of debug mode.
Install licensed SSIS runtime on your workstation - If you want to run or test your package locally without debug mode restrictions, you need to install the full licensed Integration Services feature matching your SQL Server version.
Please also make sure there are no expired trial versions of SQL Server or SSIS components on your workstation.