QtWebEngineProcess not being found in standalone package on macOS

from PySide2.QtWidgets import QApplication
from PySide2.QtWebEngineWidgets import QWebEngineView
from PySide2.QtCore import QUrl

app = QApplication([])
view = QWebEngineView()
view.load(QUrl("https://wiki.qt.io/PySide2"))
view.show()
view.page().loadFinished.connect(lambda ok: app.quit())
app.exec_()

dyld: Library not loaded: @rpath/QtWebEngineCore.framework/Versions/5/QtWebEngineCore
  Referenced from: /usr/local/lib/python3.6/site-packages/PySide2/Qt/lib/QtWebEngineCore.framework/Helpers/QtWebEngineProcess.app/Contents/MacOS/QtWebEngineProcess
  Reason: image not found