Affenb3rt figured out what the issue is with this message and why the server is not spawning those items.

It is a issue in the config.cpp of the mod defining those items. (IF your types file is indeed correct!)

If a mod uses a existing vanilla item as base class in its config.cpp and defines it like usually as external class it will make this used item and the items using it as baseclass in that config.cpp to have Type '***' will be ignored. (Type does not exist. (Typo?)) in your logs either if it does not specify the required addon patch where the original class is.

Example:

class CfgPatches
{
    class Own_GasMask
    {
        units[]=
        {};        
        weapons[]={};
        requiredVersion=0.1;
        requiredAddons[]=
        {
            "DZ_Data"
        };
    };
};
class CfgVehicles
{        
    class GP5GasMask;

    class Mod_Own_GasMask: GP5GasMask
    {

Missing required addon so its breaking the gasmask itself and also the GP5GasMask with it.