What is this pdf upload error?

Question

Access rights

import sys
from PyQt5 import QtCore, QtWidgets, QtWebEngineWidgets

PDF = 'file:///blank-f-119.pdf'

class Window(QtWebEngineWidgets.QWebEngineView):
    def __init__(self):
        super(Window, self).__init__()
        self.settings().setAttribute(
            QtWebEngineWidgets.QWebEngineSettings.PluginsEnabled, True)
        self.settings().setAttribute(
            QtWebEngineWidgets.QWebEngineSettings.PdfViewerEnabled, True)
        self.load(QtCore.QUrl.fromUserInput(PDF))

if __name__ == '__main__':

    app = QtWidgets.QApplication(sys.argv)
    window = Window()
    window.setGeometry(600, 50, 800, 600)
    window.show()
    sys.exit(app.exec_())

Explain what this error is on the Internet, nothing is written about it.
"[784:8120:0119/143956.755:ERROR:extension_function_dispatcher.cc(487)] Permission denied for metricsPrivate.recordValue"