Took some of the code from my launcher. I display the window with the site through PySide2 and QWebEngineView. Everything works fine with Python IDLE. When I compile with nuitka, the code crashes. If I output a normal window without the web module, everything works fine. Here is the code itself: from PySide2 import QtCore, QtGui, QtWidgets from PySide2.QtWidgets import QApplication, QMainWindow, QPushButton, QVBoxLayout, QWidget from PySide2.QtWebEngineWidgets import QWebEngineView import logging class Ui_MainWindow(object): def setupUi(self, MainWindow): MainWindow.setObjectName("MainWindow") MainWindow.resize(1000, 700) MainWindow.setBaseSize(QtCore.QSize(0, 0)) # window self.centralwidget = QtWidgets.QWidget(self) self.setCentralWidget(self.centralwidget) self.centralwidget.setObjectName("centralwidget") font = QtGui.QFont() font.setFamily("Segoe UI Semibold") self.main_window_frame = QtWidgets.QFrame(self.centralwidget) self.main_window_frame.setGeometry(QtCore.QRect(5, 10, 1000, 700)) self.main_window_frame.setStyleSheet("background-color: rgb(54,57,62)") self.main_window_frame.setFrameShape(QtWidgets.QFrame.StyledPanel) self.main_window_frame.setFrameShadow(QtWidgets.QFrame.Raised) self.main_window_frame.setObjectName("main_window_frame") # (dont ask me what is it) self.tab_menu_frame3 = QtWidgets.QFrame(self.main_window_frame) self.tab_menu_frame3.setGeometry(QtCore.QRect(0, 50, 1000, 650)) self.tab_menu_frame3.setStyleSheet("background-color: rgb(54,57,62)") self.tab_menu_frame3.setFrameShape(QtWidgets.QFrame.StyledPanel) self.tab_menu_frame3.setFrameShadow(QtWidgets.QFrame.Raised) self.tab_menu_frame3.setObjectName("tab_menu_frame3") # web engine self.web_view = QWebEngineView(self.main_window_frame) self.web_view.setGeometry(QtCore.QRect(0, 50, 1000, 650)) self.web_view.setUrl(QtCore.QUrl('https://example.com')) try: self.web_view.show() except Exception as e: logging.error(f"Error: {e}") class MainWindow(QtWidgets.QMainWindow, Ui_MainWindow): def __init__(self): super().__init__() self.setupUi(self) self.setWindowFlags(QtCore.Qt.FramelessWindowHint) self.setAttribute(QtCore.Qt.WA_TranslucentBackground) if __name__ == '__main__': import sys app = QtWidgets.QApplication(sys.argv) try: w = MainWindow() w.show() sys.exit(app.exec_()) except Exception as e: logging.error(f"Error: {e}") nuitka options: python -m nuitka --onefile --windows-console-mode=force --enable-plugin=pyside2 --standalone test.pyw The console (cmd C:\test.exe) displays this: QtWebEngine resources not found at C:/Temp/ONEFIL~1/PySide2/resources... Trying parent directory… Qt WebEngine resources not found at C:/Temp/ONEFIL~1/PySide2... Trying application directory… Qt WebEngine resources not found at C:/Temp/onefile_9968_133754483410059208. Trying fallback directory… The applicatio n MAY NOT work. Installed Qt WebEngine locales directory not found at location C:/Temp/ONEFIL~1/PySide2/translations\qtwebengine_locales Trying application directory… Qt WebEngine locales directory not found at location C:/Temp/onefile_9968_133754483410059208\qtwebengine_locales. Trying fallback directory… Translations MAY NOT not be correct. [1107/151902.529:ERROR: icu_util.cc (251)] Couldn't mmap icu data file I tried changing the code from PyQt5 to PySide2 because I thought nuitka with PyQt5 was compiling qtwebengineview with errors, but nothing changed. Tried changing nuitka parameters, nothing changed. I expected it to be easier Continue reading...