ust if is anyone having the same issue that I had fixed by deleting:
•1) Delete the ‘cache’ folder. You will find in in your war thunder installation location.
•2) Open war thunder launcher and it will download the necessary (it’s not big size, It will just re-download new cache files)
3) Once download is completed, Run files check You can find this option by opening War thunder launcher → click on launcher settings (wrench icon) top right