Can't move on to the next set of instructions even though I've done everything asked of me

I’m doing C# training, I’m in a section where it wants me to create an error in the console. I have created the error and the next set of instructions won’t unlock. I can see them but I need the hint which I can’t access.

I’ve found this a couple of times and sometimes leaving and coming back fixes the issue but no such luck.

I’m quite disappointed it happens at all!

Any advice? I don’t think it’s a code problem because I’m supposed to get it wrong!!