### Godot version

4.0.2

### System information

Windows 10

### Issue description

EDIT: this was fixed by removing the offending files listed with the MRP and then dragging them back in from my desktop after opening the project~

I was developing my game then suddenly this started happening. I can no longer playtest my game.
I am not 100% sure what caused this but I believe at the time I was making a new inherited scene, saved it, then moved some scenes in the FileSystem tab?

![image](https://user-images.githubusercontent.com/75141902/235264827-62419c7d-963b-4002-9452-a6493a9bfe25.png)


### Steps to reproduce

No idea aaa- x-x

### Minimal reproduction project

Since I have no idea what caused it here's my early project :'D
https://drive.google.com/file/d/14JFZ420AelUNjBIth78msHY29rNjB55_/view?usp=share_link

I was working on these when the error occurred:
- Slot_0.tcsn
- Slot_Clickable.tscn
- Slot_Orphan.tscn
- Slot_Orphan.gd

AssertNode *assert = alloc_node<AssertNode>();
	push_multiline(true);
	consume(GDScriptTokenizer::Token::PARENTHESIS_OPEN, R"(Expected "(" after "assert".)");
	assert->condition = parse_expression(false);
	if (assert->condition == nullptr) {
		push_error("Expected expression to assert.");
		pop_multiline();
		complete_extents(assert);
		return nullptr;
	}
	if (match(GDScriptTokenizer::Token::COMMA) && !check(GDScriptTokenizer::Token::PARENTHESIS_CLOSE)) {
		assert->message = parse_expression(false);
		if (assert->message == nullptr) {
			push_error(R"(Expected error message for assert after ",".)");
			pop_multiline();
			complete_extents(assert);
			return nullptr;
		}
		match(GDScriptTokenizer::Token::COMMA);
	}
	pop_multiline();
	consume(GDScriptTokenizer::Token::PARENTHESIS_CLOSE, R"*(Expected ")" after assert expression.)*");
	complete_extents(assert);
	end_statement(R"("assert")");
	return assert;
}
GDScriptParser::BreakNode *GDScriptParser::parse_break() {