With those four errors, the top two are fairly straight forward to resolve.
Open your animation window and select your trophy, you may need to drop one into the scene temporarily to do this.
Select the clip from the drop down menu (top-left of the animation window) and on the timeline to the right you’ll note that you have one (or more) animation events, the appear as a small white vertical bar, blue if selected.
Select each one and then in the Inspector on the right you’ll see a drop down menu for the function to associate with the event.
You either have not selected the function which you meant to, or, added an event you didn’t need. You can now either select the appropriate function or, if you don’t need the event, with it selected press delete (I think you can right-click on it for the delete option also).
After resolving these, let’s see what happens with the other two null reference exception errors and go from there.
Sorry for lack of screen shots, replying via mobile.
Updated Sun Dec 09 2018 11:06
Screenshots to make it easier to explain;
GameObject selected in Hierarchy on the left
Animation window open
“Player_Idle” (in this case, not Glitch Garden) Animation Clip selected
On the right, small white vertical bar on the timeline, that’s the Animation Event
Select the Animation Event, it will turn blue, and view the Inspector, you’l see the “No Function Selected” message in the drop down menu.
Either expand and select a function, e.g.;
Or, right-click on the Animation Event and select Delete Animation Event if you don’t want it;
Hope this helps