MK112 Simon says - warm IC

First time Velleman minikit project and … it doesn’t work properly. The main problem is that the IC turns warm.
Does anyone have an idea what went wrong?
https://photos.app.goo.gl/jFs8Ui5KDtZF4FW57
Thanks

It looks like you have the IC socket mounted backwards.
If you are aliening the notch of the IC you are plugging it in backwards.