make minimum spawn amount higher than 0

server/src/cmd.rs

@@ -217,7 +217,10 @@ fn handle_spawn(server: &mut Server, entity: EcsEntity, args: String, action: &C
 
     // Make sure the amount is either not provided or a valid value
     let opt_amount: Option<u32> = if let Some(amount) = opt_amount {
-        amount.parse().ok()
+        match amount.parse().ok() {
+            Some(x) if x == 0 => None,
+            x => x
+        }
     } else {
         Some(1)
     };