spyder 4.2.5 requires pyqt5<5.13, but you have pyqt5 5.15.4 which is incompatible.
pip install --upgrade --user pyqt5==5.12
spyder 4.2.5 requires pyqt5<5.13, but you have pyqt5 5.15.4 which is incompatible.
pip install --upgrade --user pyqt5==5.12
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