The Tear is located in Objects->Artefacts. It looks like a blue cube with the inscription GRAIL on it. Regarding the large number of errors: in the abandoned mine, the type of resources to be mined is not defined. The objects are at the wrong level. If you have changed the landscape, you need to select the object after placing it and align the ground underneath it by pressing the H key. I think I've answered everything.
The Tear is located in Objects->Artefacts. It looks like a blue cube with the inscription GRAIL on it. Regarding the large number of errors: in the abandoned mine, the type of resources to be mined is not defined. The objects are at the wrong level. If you have changed the landscape, you need to select the object after placing it and align the ground underneath it by pressing the H key. I think I've answered everything.