having issues packaging my project for windows because of metahuman linking in UE 5.2

[HamidHakha11]

I created a very simple game only with blueprints in Unreal Engine 5.2. My project doesnt use c++ at all and it uses the metahuman plugin very extensively as a foundational piece.

I have tried to package my project many times so far and I keep getting the same thing:

fatal error LNK1120: 3 unresolved externals.

I am writing this because the issue I am having is way above my skill level.

So thats where you brilliant minds come in. I have had no success using google, youtube, chatgpt, bard, claude to solve this rather complicated problem

Here is the problem in detail. I would greatly appreciate for any help, tips, guidance you can give me on this. You are the only resort I have left.

Upon closer investigation of the complete log that you can find here:

log

I discovered these lines:

FaceMeshSolve.cpp.obj : error LNK2001: unresolved external symbol __std_find_trivial_2

FaceTracking.cpp.obj : error LNK2001: unresolved external symbol __std_find_trivial_2

PCARigCreator.cpp.obj : error LNK2001: unresolved external symbol __std_find_trivial_2

ImageIO.cpp.obj : error LNK2001: unresolved external symbol __std_find_trivial_2

VertexWeights.cpp.obj : error LNK2001: unresolved external symbol __std_find_trivial_2

solver_utils.cpp.obj : error LNK2001: unresolved external symbol __std_find_trivial_2

string_functions.cpp.obj : error LNK2001: unresolved external symbol __std_find_trivial_2

fatal error LNK1120: 3 unresolved externals

After investigating all these errors further I discovered every single error has to do with the MetaHuman plugin.

There is only one place online that someobdy had the same issue the way they resolved the problem is that they removed the metahuman plugin.

Except I can’t do that. My whole game is based on metahuman, everything. To remove metahuman for me is like trying the foundation of a house.

So I am trying to find a solution.

The best solution I found is this.

UE5 LNK2001 unresolved external symbol Solution – Unreal Build Tool

So I have to do this, as mentioned in this article:

“LNK2001 error is thrown by Visual Studio Linker after the developer has attempted to inherit from or use a class that’s not in the module dependency list. It is a C++ Linker error meaning that the linker failed to find either the .cpp or .obj needed to link. The developer has to make sure to include all the modules containing the code that is referenced by his CPP files. Follow this simple step-by-step tutorial to solve it.”

Except I can’t do this. My whole project is using blueprints. I dont know how to code in c++.

Granted I can read c++ and make sense of some logic. I am good at following step by step instructions. But I can’t find any on this particular issue. And the article I mentioned above doesn’t really address my issue given my level of knowledge, skill and understanding in c++.

So thats where you brilliant minds come in. I have had no success using google, youtube, chatgpt, bard, claude to solve this rather complicated problem, way above my skill level. I need a way to solve the following problem:

need to ensure that the linker has access to the required modules containing the referenced code used within the MetaHuman plugin’s code.

I would greatly appreciate for any help, tips, guidance you can give me on this. You are the only resort I have left.

Thank you so much for your attention and help!

[Z_Y_B_R]

Hello there! My whole project also made in blueprints and in UE 5.2.1. I also have issues with this .cpp classes but with little bit different errors. If i could resolve this issue then would try to help you.

[Z_Y_B_R]

First of all, major problem are LNK2019 and LNK2001 cause of that LNK1120 appear. Linker Tools Error LNK2019 | Microsoft Learn

"The compiled code for function makes a reference or call to symbol, but the linker can’t find the symbol definition in any of the libraries or object files.

This error message is followed by fatal error LNK1120. To fix error LNK1120, you must fix all LNK2001 and LNK2019 errors first."

Then, i found in log that thing:

Unreal say that i need update my visual studio 2019 to 2022.
And, what is important i found it also in your log file.

Try update your visual studio to 2022 version. I’ll try it little bit later and then would type here if it help.

[Z_Y_B_R]

I’ve updated Visual studio to 2022 version and it helped