PyQtで作成したプログラムをEXE化したところエラーが発生しEXEが起動しない

前提・実現したいこと

海外のQtを使用したMP4プレイヤーのサンプルコードを
pyinstallerでexe化しようとしたところ、成功はするのですが
いくつかエラーが発生し、作成されたEXEファイルも起動しません
どうすればよいでしょうか？

発生している問題・エラーメッセージ

エラーメッセージ

Python path configuration:
  PYTHONHOME = 'C:\Workspeac\dist\player'
  PYTHONPATH = (not set)
  program name = 'C:\Workspeac\dist\player\player.exe'
  isolated = 0
  environment = 0
  user site = 0
  import site = 0
  sys._base_executable = 'C:\Workspeac\dist\player\player.exe'
  sys.base_prefix = ''
  sys.base_exec_prefix = ''
  sys.platlibdir = 'lib'
  sys.executable = 'C:\Workspeac\dist\player\player.exe'
  sys.prefix = ''
  sys.exec_prefix = ''
  sys.path = [
    'C:\Workspeac\dist\player\base_library.zip',
    'C:\Workspeac\dist\player\lib-dynload',
    'C:\Workspeac\dist\player',
  ]
Fatal Python error: init_fs_encoding: failed to get the Python codec of the filesystem encoding
Python runtime state: core initialized
ModuleNotFoundError: No module named 'encodings'

Current thread 0x00004f6c (most recent call first):
<no Python frame>

トレースバック

Traceback
1  File "c:\users\my_username\appdata\local\programs\python\python39\lib\runpy.py", line 197, in _run_module_as_main
2    return _run_code(code, main_globals, None,
3  File "c:\users\my_username\appdata\local\programs\python\python39\lib\runpy.py", line 87, in _run_code
4    exec(code, run_globals)
5  File "C:\Users\my_username\AppData\Local\Programs\Python\Python39\Scripts\pyinstaller.exe\__main__.py", line 7, in <module>
6  File "c:\users\my_username\appdata\local\programs\python\python39\lib\site-packages\PyInstaller\__main__.py", line 114, in run
7    run_build(pyi_config, spec_file, **vars(args))
8  File "c:\users\my_username\appdata\local\programs\python\python39\lib\site-packages\PyInstaller\__main__.py", line 65, in run_build
9    PyInstaller.building.build_main.main(pyi_config, spec_file, **kwargs)
10  File "c:\users\my_username\appdata\local\programs\python\python39\lib\site-packages\PyInstaller\building\build_main.py", line 737, in main
11    build(specfile, kw.get('distpath'), kw.get('workpath'), kw.get('clean_build'))
12  File "c:\users\my_username\appdata\local\programs\python\python39\lib\site-packages\PyInstaller\building\build_main.py", line 684, in build
13    exec(code, spec_namespace)
14  File "C:\Workspeac\player.spec", line 31, in <module>
15    coll = COLLECT(exe,
16  File "c:\users\my_username\appdata\local\programs\python\python39\lib\site-packages\PyInstaller\building\api.py", line 712, in __init__
17    self.__postinit__()
18  File "c:\users\my_username\appdata\local\programs\python\python39\lib\site-packages\PyInstaller\building\datastruct.py", line 160, in __postinit__
19    self.assemble()
20  File "c:\users\my_username\appdata\local\programs\python\python39\lib\site-packages\PyInstaller\building\api.py", line 756, in assemble
21    shutil.copy(fnm, tofnm)
22  File "c:\users\my_username\appdata\local\programs\python\python39\lib\shutil.py", line 418, in copy
23    copyfile(src, dst, follow_symlinks=follow_symlinks)
24  File "c:\users\my_username\appdata\local\programs\python\python39\lib\shutil.py", line 264, in copyfile
25    with open(src, 'rb') as fsrc, open(dst, 'wb') as fdst:
26FileNotFoundError: [Errno 2] No such file or directory: 'C:\Users\my_username\AppData\Local\pyinstaller\bincache00_py39_64bit\pyqt5\qt\plugins\platforms\qminimal.dll'

該当のソースコード

python
1import sys
2from functools import partial
3from PyQt5.QtCore import QEvent, QUrl, Qt
4from PyQt5.QtWidgets import (QApplication, QHBoxLayout, QMainWindow,
5                             QWidget, QPushButton, QSlider,
6                             QVBoxLayout)
7from PyQt5.QtMultimedia import QMediaContent, QMediaPlayer
8from PyQt5.QtMultimediaWidgets import QVideoWidget
9# Ruta del archivo.
10VIDEO_PATH = "Profire.avi"
11class MainWindow(QMainWindow):
12
13    def __init__(self):
14        super().__init__()
15
16        # Controles principales para organizar la ventana.
17        self.widget = QWidget(self)
18        self.layout = QVBoxLayout()
19        self.bottom_layout = QHBoxLayout()
20
21        # Control de reproducción de video de Qt.
22        self.video_widget = QVideoWidget(self)
23        self.media_player = QMediaPlayer()
24        self.media_player.setMedia(
25            QMediaContent(QUrl.fromLocalFile(VIDEO_PATH)))
26        self.media_player.setVideoOutput(self.video_widget)
27
28        # Botones de reproducción y pausa.
29        self.play_button = QPushButton("PAUSE", self)
30        self.stop_button = QPushButton("最初から", self)
31
32        # Deslizadores para el volumen y transición del video.
33        self.seek_slider = QSlider(Qt.Horizontal)
34        self.volume_slider = QSlider(Qt.Horizontal)
35        self.volume_slider.setRange(0, 100)
36        self.volume_slider.setValue(self.media_player.volume())
37        self.seek_slider.sliderMoved.connect(self.media_player.setPosition)
38        self.volume_slider.sliderMoved.connect(self.media_player.setVolume)
39        self.media_player.positionChanged.connect(self.seek_slider.setValue)
40        self.media_player.durationChanged.connect(
41            partial(self.seek_slider.setRange, 0))
42
43        # Acomodar controles en la pantalla.
44        self.layout.addWidget(self.video_widget)
45        self.layout.addLayout(self.bottom_layout)
46        self.bottom_layout.addWidget(self.play_button)
47        self.bottom_layout.addWidget(self.stop_button)
48        self.bottom_layout.addWidget(self.volume_slider)
49        self.layout.addWidget(self.seek_slider)
50
51        # Conectar los eventos con sus correspondientes funciones.
52        self.play_button.clicked.connect(self.play_clicked)
53        self.stop_button.clicked.connect(self.stop_clicked)
54        self.media_player.stateChanged.connect(self.state_changed)
55
56        # Se utiliza installEventFilter() para capturar eventos
57        # del mouse en el control de video.
58        self.video_widget.installEventFilter(self)
59
60        # Personalizar la ventana.
61        self.setWindowTitle("ゆるキャン△ Season1 一話")
62        self.resize(800, 600)
63        self.layout.setContentsMargins(0, 0, 0, 0)
64        self.bottom_layout.setContentsMargins(0, 0, 0, 0)
65        self.widget.setLayout(self.layout)
66        self.setCentralWidget(self.widget)
67
68        # Reproducir el video.
69        self.media_player.play()
70
71    def play_clicked(self):
72        """
73        Comenzar o resumir la reproducción.
74        """
75        if (self.media_player.state() in
76            (QMediaPlayer.PausedState, QMediaPlayer.StoppedState)):
77            self.media_player.play()
78        else:
79            self.media_player.pause()
80
81    def stop_clicked(self):
82        """
83        Detener la reproducción.
84        """
85        self.media_player.stop()
86
87    def state_changed(self, newstate):
88        """
89        Actualizar el texto de los botones de reproducción y pausa.
90        """
91        states = {
92            QMediaPlayer.PausedState: "再生",
93            QMediaPlayer.PlayingState: "一時停止",
94            QMediaPlayer.StoppedState: "再生する"
95        }
96        self.play_button.setText(states[newstate])
97        self.stop_button.setEnabled(newstate != QMediaPlayer.StoppedState)
98
99    def eventFilter(self, obj, event):
100        """
101        Establecer o remover pantalla completa al obtener
102        el evento MouseButtonDblClick.
103        """
104        if event.type() == QEvent.MouseButtonDblClick:
105            obj.setFullScreen(not obj.isFullScreen())
106        return False
107if __name__ == "__main__":
108    app = QApplication(sys.argv)
109    window = MainWindow()
110    window.show()
111    sys.exit(app.exec_())