_body_enter_tree() - Condition "!E" is true

[hhyyrylainen]

This didn't have an issue yet. I have a guess that this is related to: #1126 and #1282

This error is printed sometimes when new cells spawn (at least I think that's the trigger usually):

**ERROR**: Condition "!E" is true.
   At: scene/3d/area.cpp:123:_body_enter_tree() - Condition "!E" is true.
**ERROR**: Condition "!E" is true.
   At: scene/3d/area.cpp:123:_body_enter_tree() - Condition "!E" is true.
**ERROR**: Condition "!E" is true.
   At: scene/3d/area.cpp:123:_body_enter_tree() - Condition "!E" is true.

usually repeats a few times in a row

[hhyyrylainen]

I think this problem is fixed in Godot 3.3.2 along with the other physics error printing.