If there are mixes where the price of one or more components is not set, the total price will be shown as incomplete for both the mix and the workorder. When hovering over the incomplete text, the current cumulative price is shown in a tooltip.

When opening the Workorder, you can see that the Total price of the Workorder is incomplete, and the affected Mix also shows an incomplete Total price.

To verify which price is missing, click on the "Mix information" icon to open the Mix Information page.

Here, you can see which price in the formula is missing. To enter the missing price, click on   Missing  

This opens the item in the Price module:

Now, enter the price of the item.

Then, return to the Mix Information page.

Click the  RECALCULATE PRICE  button.

Now, the Total price is also shown in the Workorder.