LaTeX Beginner's Guide ⇒ I can't seem to figure out what the error is

[valeria navarro]

the error appears in my template but I don't know how to fix it. I searched many ways but the error does not give me reference to what the error is.
I share my template
https://www.overleaf.com/4635648341ybmvpfhndpwf

I hope you can help me

[Stefan Kottwitz]

Hi Valeria,

welcome to the forum!

Hard to say when all information is outside the forum and it requires an Overleaf account. However, the main issue may be with the Estilos package, because the main document compiles without error if you remove \usepackage{Estilos} or comment it out. Check what you changed there or get the original package.

Stefan

[valeria navarro]

thank you very much for helping me, but if I remove this package, the style of the template is gone. I lose the formatting of my template.