I have not asked any questions to the forum before but this problem has been to much. When I use TextMeshProUGUI in script it uses namespace TMPro in Visual Studio Community 2019.
When I go back to Unity 2020.1.8, it doesn’t recognize the namespace with the above error message.
I use TextMeshPro 3.01. I have looked for a solution in 3 days. I tried to move TextMeshPro into my project but then TextMeshPro was damaged with no scripts in folder so I had to reinstall Unity 2020.1.8. I don’t know now how to get this working.