I am by no means an engineer, but just looking at the angles involved that the load at that joint that failed is in the 100-200 kg range, maybe even a lot more. If the legs were vertical then each of 4 legs would carry 25 kg given a table top of 100 kg. We must have an engineer in this group. Please tell us the loading on this joint.

Tor and Odin are the greatest of gods.