Mod RNG TX 8x8 Concept Truck

This mod works perfectly on themain server, but when trying to buy the Bridge Frame in the public server, "this"(Below) is what I get when trying to buy it.

Screenshot (13).png

Exactly the same problem on the final game too.

SnowRunner __  KSIVA_ p_3f42c 12-09-21 21_50_48 (Medium).png