vulkan unable to find validation layers

Question

I'm following a vulkan tutorial and when i'm trying to check for validation layer support. the function always returns false when it is supposed to return true. this is the code:

bool app::checkValidationLayersSupport() {
uint32_t layersCount = 0;
vkEnumerateInstanceLayerProperties(&layersCount, nullptr);

std::vector<VkLayerProperties> availableLayers(layersCount);
vkEnumerateInstanceLayerProperties(&layersCount, availableLayers.data());
std::cout << layersCount << "\n";


for (const char* layerName : validationLayers) {
    std::cout << layerName << "\n";
    for (const auto& layerProperties : availableLayers) {
        if (strcmp(layerName, layerProperties.layerName) == 0) {
            std::cout << layerProperties.layerName << std::endl;
            return true;
        }
    }
}

return false;}

validationLayers value is { "VK_LAYER_KHRONOS_validation" } (std::vector<const char*>)

after vkEnumerateInstanceLayerProperties LayersCount value is 5 so i think the problem is that the second vkEnumerateInstanceLayerProperties can't change the value of availableLayers so it remains empty

edit: I checked it and the second vkEnumerateInstanceLayerProperties is initializing the vector but the needed validation layer is not in it.

fix: i reinstalled the sdk