I can not read a pdf file

[Andres_Camilo_Andrad (Andrés Camilo Andrade Viviescas)]

Hello, I have two pdf files, however there is one that does not allow me to read, the one that allows to read has labeling and both have text, but the one that does not allow reading has no labeling and but with the mouse if you can copy and paste it. text, you can help me, because you do not read both pdf.

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the latter allows to read