### Godot version

4.0.2.stable

### System information

Windows 10

### Issue description

Engine keeps spamming me this
![изображение](https://user-images.githubusercontent.com/89089095/232018878-1584ed55-5867-4883-9519-67b82ef93813.png)


### Steps to reproduce

No steps, issue happens from time to time absolutely randomly

### Minimal reproduction project

N/A
push_error(R"(Cannot use "extends" more than once in the same class.)");
		}
		parse_extends();
		end_statement("superclass");
	}
	parse_class_body(multiline);
	complete_extents(n_class);
	if (multiline) {
		consume(GDScriptTokenizer::Token::DEDENT, R"(Missing unindent at the end of the class body.)");
	}
	current_class = previous_class;
	return n_class;
}
void GDScriptParser::parse_class_name() {
	if (consume(GDScriptTokenizer::Token::IDENTIFIER, R"(Expected identifier for the global class name after "class_name".)")) {
		current_class->identifier = parse_identifier();
		current_class->fqcn = String(current_class->identifier->name);
	}
	if (match(GDScriptTokenizer::Token::EXTENDS)) {
		
		parse_extends();
		end_statement("superclass");
	} else {
		end_statement("class_name statement");
	}
}
void GDScriptParser::parse_extends() {
	current_class->extends_used = true;
	int chain_index = 0;
	if (match(GDScriptTokenizer::Token::LITERAL)) {