So I'm trying to use grep with both -v argument and -A argument.

So my file has text like:

```
This error
-this
-this
-that
[text I want]
This error
-asd
-asfag
-adsfhs
[text I want]
[text I want]
This error
-asdgsda
-asdgg
-gasdg

```

After a tail, I found out that this log file is filled with the same `This error` followed by 3 lines construct, and I can easily find them by using `grep -A3 'This error'`, this shows me the error and the 3 lines after it.

But I want to see everything OTHER than that, hence the -v argument, but it doesn't work. When I do `grep -v -A3 'This error'` it returns the whole file, like grep didn't even work at all.

What is the problem here?