This activity is missing or could not be loaded on the whole project

Hi @79832

In your image in project panel all the dependencies are missing, it may be deleted
Install the UiPath.System.Activities package from the Manage Packages.

Process to install the packages -
→ Open the Manage packages tab in the Design ribbon
→ Click on All Packages
→ Search for the UiPath.System.Activities then hit on install and save.

Check the below image for better understanding,

Note : Install all the packages for which activities you are used, this means if you are used excel activities then install the UiPath.Excel.Activites package like that. If the packages are already installed then update the every package in the project dependencies option in manage packages.

Hope it helps!!

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