UWP App Crash at Class1 c1 = new Class1(); saying - The specified module could not be found. (Exception from HRESULT: 0x8007007E

I am trying to create a library of fftool so that the uwp app doesn't have to launch a process to run FFmpeg exe out of the environment and yet able to run all command of fftool. so, for that first, I created a static lib compiling fftool c code adding all the necessary linking and include then I created a WinRT component in c++ to connect this library to my uwp app so, again provided all the input, link, include and then added a reference to the static library to it. since both of them are in the same solution. so, I did not add a reference to the linker and include for the static library in the WinRT component then for the test, I created a class calling a simple function that I added to c manually but now whenever I try to create an object of that test class it throws an error saying -The specified module could not be found. (Exception from HRESULT: 0x8007007E)

and this is all at runtime while compiling and launching of the app in c# work fine. but if I use the c++ app it crashes as it launches and also I am new to c and c++ I didn't use the c/c++ before that so I am stuck at it and unable to understand what's wrong and I tried googling it but I am unable to find something

thanks

ok so it looks like my app is unable to find FFmpeg core dll as avcodec, avfilter, etc so now I added them to exe location and it worked ok