can't import a ".json" file using pyside and python

Question

Good evening, I am developing an application in QtDesigner PySide2 in python, the main code so far is the following:

from PySide2.QtWidgets import QMainWindow
from views.Main_Menu import MainWindow
from Custom_Widgets.Widgets import *
from PySide2.QtWidgets import QApplication
import sys

class MainMenu_Controller(QMainWindow, MainWindow):
    def __init__(self):
        super().__init__()
        self.ui=MainWindow()
        self.ui.setupUi(self)
        loadJsonStyle(self,self.ui)

if __name__ == '__main__':
    app = QApplication(sys.argv)
    window=MainWindow()
    window.show()
    sys.exit(app.exec_())

I import the configurations from a ".json" file, which is the following:

{
"QMainWindow":[
    {
        "tittle":"Control de Impuestos",
        "icon":":/Iconos/assets/Iconos/framer.svg",
        "frameless":true,
        "transluscentBg":true,
        "sizeGrip":"sizeGrip",
        "navigation":[
            {
                "minimize":"Minimize",
                "close":"Close",
                "restore":[
                    {
                        "buttonName":"Restorebtn",
                        "normalIcon":":/Iconos/assets/Iconos/minimize-2.svg",
                        "maximizedIcon":":/Iconos/assets/Iconos/maximize-2.svg"
                    }
                ],
                "moveWindow":"TopMenuContainer",
                "tittleBar":"TopMenuContainer"
            }
        ]
    }
]
}

The problem is that the file runs, but when I import 'Custom_Widgets' it gives me the following error:

OSError: no library called "cairo-2" was found
no library called "cairo" was found
no library called "libcairo-2" was found
cannot load library 'libcairo.so.2': error 0x7e
cannot load library 'libcairo.2.dylib': error 0x7e
cannot load library 'libcairo-2.dll': error 0x7e

Do you know what the problem is? It took several weeks looking for the solution.