Find [09:49:58] console error. How to solve this error ?

I am new in unity and i made a simple project name ROLL_BALL. i want to made a C# script but it’s not open a editor panel.
i write a script using different way but when i play my project it’s show [09:49:58] console error.
please, help me to solve this error and why C# script is not open in unity.

Have you found this answer already?

Thanks @Peter77 for answering. @miteshgandhi37 :

Can you take a look at this: Use .NET 4 and later versions in Unity | Microsoft Learn

Change the scripting runtime version please to 4.x and let me know if it works.

Cheers,
Pedro
Unity STE