pdf2jpg always gives error [WinError 2] The system can not find the specified file

Hello everyone, my question is this I am trying to use the function pdf2jpg in python but it is impossible for me to upload the PDF file

from pdf2jpg import pdf2jpg
import sys,os


_dirPDF=sysVar.Get("VarDirPDF") # funcion propia devuelve "C:/Users/Tor/Desktop/aqui/t.pdf"
_Instdir=sysVar.Get("VarInstalationDir")  # funcion propia devuelve "C:/Users/Tor/Desktop/PROGRAMAS/script_folder"
_thumbFOLDER="{}{}{}".format(_Instdir,"/imagenes","/thumb/") # variable _thumbFOLDER='C:/Users/Tor/Desktop/PROGRAMAS/script_folder/imagenes/thumb/'
_file="{}{}".format(file_name,file_extension) # variable file_name  vale "t" y variable file_extension vale ".pdf"
 # por lo tanto _file="t.pdf"
_file_="{}{}{}{}".format("\"",_dirPDF,_file,"\"") #variable _file_='"C:/Users/Tor/Desktop/aqui/t.pdf"'
_fileJPG="{}{}".format(file_name,".jpg")  #variable _fileJPG="t.jpg"

 inputpath = os.path.dirname(_dirPDF)+"/t.pdf"
 outputpath = _thumbFOLDER

 # To convert single page
 result = pdf2jpg.convert_pdf2jpg(inputpath, outputpath, pages="1")
 #el error se da aca cuando 'pdf2jpg.convert_pdf2jpg' trata de cargar 'inputpath'
 print(result)

and this always gives error error [WinError 2] The system can not find the specified file

I have tried to change the imputpat inputpath = os.path.dirname(_dirPDF)+"t.pdf" in different ways:

indicating the file directly

os.chdir(_dirPDF)
inputpath = "t.pdf"

where _dirPDF="C: / Users / Tor / Desktop / here"

passing address and file

inputpath = _file_

where _file="C: /Users/Tor/Desktop/aqui/t.pdf"

or

inputpath = r"C:/Users/Tor/Desktop/aqui/t.pdf"

and nothing always ends giving error error [WinError 2] The system can not find the specified file

NOTE: if anyone can help me create the error pdf2jpg tag, and [WinError 2] or complete [WinError 2] The system can not find the specified file would be great;)

I hope you can help me,

Thanks !!!!