I have created a pure Python project in PyCharm and imported numpy, tensorflow and opencv in order to test a small program. <
The problem does not come from PyCharm, if you use any other IDEs, the result would be the same. In fact, they all use a package called pydev to debug. Your best bet would be to create a brand new Python environment (PyCharm has a function for this) and gradually install packages.
If the solution works and you can find out which package conflicts with pydev, it will be most helpful.