I see youre using Windows 7, i earched up the issue and found an answer pretty quickly. Its because pyinstaller doesn't support Windows 7 anymore.
"PyInstaller doesn't support Windows 7 anymore. However, the issue is probably due the fact that the Python DLL is incompatible with Windows 7. That error message is caused by the system being unable to load the DLL" source: https://groups.google.com/g/pyinstaller/c/XcTSSsPP5ac?pli=1