Pipeline related question

### What happens

Hi team. I'm on my third day and trying to wrap my head around still. I'm having some tests failing with no apparent reason. First off, there's an error with the solution file (/test/generic/check_files). It says it doesn't exist but it actually does. (proof 1)
Secondly, the /test/others/10_external_links test says there are just three external links where there are 10 (proof 2)


### What do you understand or find about that problem

I'm not really sure why this happens. I've been running several commits and sometimes they trigger and sometimes they don't. 

### You make any workaround? What did you do?

I haven't been able to get past this stage.

### Evidences



### I need help with
I'd like to understand what and why is happening.


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