Hi @darrenfloyd666 ,
Have you deployed a PowerApps app Portal in your Target Environment?
According to the screenshot that you mentioned, it seems that these missing components are from a Portal in your Source Environment. The error message told that "The other items/components in your solution have dependencies on objects that are missing in your target environment".
The user @AnjanChidige has faced similar issue with you, please check the response within the following thread:
https://powerusers.microsoft.com/t5/Building-Power-Apps/Model-Driven-App-import-Failed/m-p/533035
As an fixed solution, you need to import these missing components into your Target Environment. Please go to "Power Platform Admin Center"-> find your Source Environment, then click "Settings" option, then expand the Resources section, click "All legacy settings" option:

Within the opening browser tab, go to Settings-> "Solutions", then you would see all solutions hosted in your Source Environment there:

find the "Dynamics 365 Portals - Web Forms" solution, select it, then click "Export" button to export it. After that, switch to your Target Environment, then import previous exported "Dynamics 365 Portals - Web Forms" solution.
After that, try your import process again, then check if the issue is fixed.
Best regards,