FindMember fails assertion, but code works as expected in Release mode

[Viverea]

I am creating a wrapper class that allows users to save/load to files without touching the rapidjson syntax.

Wrapper class:

class LoadFile
{
public:
	LoadFile& LoadObject(const std::string& name = "");

	std::string LoadString(const std::string& name) const;
private:
	LoadFile(const rapidjson::Value& fileValue);
	const rapidjson::Value& file;

	friend class FileManager;
};

Parsing and initializing the Value&:

LoadFile& FileManager::OpenLoadFile(const string& filepath)
{
	std::ifstream fileStream(filepath);
	std::string sceneString((std::istreambuf_iterator<char>(fileStream)), std::istreambuf_iterator<char>());

	if (!sceneString.compare(""))
		throw "Unable to open file for loading!";

	Document fileDocument;
	fileDocument.Parse(sceneString.c_str());

	if (!fileDocument.IsObject())
		throw "Unable to open file for loading!";

	const Value& fileValue = fileDocument.GetObject();

	LoadFile* loadFile = new LoadFile(fileValue);

	return *loadFile;
}

How I load an object:

LoadFile& LoadFile::LoadObject(const std::string& name)
{
	Value::ConstMemberIterator finder = file.FindMember(name.c_str());

	if (finder != file.MemberEnd())
	{
		if (finder->value.IsObject())
			return *(new LoadFile(finder->value));
	}

	throw "Bad";
}

json file:

{
	"GO1": { 
		"Name": "Test1", 
		"ID": 999, 
		"Enabled": true, 
		"Rotation": 0.333, 
		"Position": { 
			"X": 1, 
			"Y": 0.5
			 }
		 }
}

Use case:

FileManager::LoadFile& loadFile = FileManager::OpenLoadFile("Assets/Temp/Test.txt");
FileManager::LoadFile& go1 = loadFile.LoadObject("GO1");
std::string hewo = go1.LoadString("Name");

On Debug mode, assertion for IsObject() fails when the FindMember in LoadObject runs.
On Release mode, nothing gets thrown and I load my Name string perfectly fine.

I have checked the parse result as well, which returns non-error.