Issue in packaging with Procedural Mesh

I’ve created a basic project where I have a custom mesh which can be changed based on the values in a panel. To this custom mesh, I’ve applied video textures. I did these things via scripting. I tried packaging the project for windows.

But once the project is packaged and I opened the .exe file, the textures were not applied on to the mesh. It worked well within the editor though.

What should I do about this? Is there any solution for this issue?