fixed error because it is now object instead of array

public/js/pages/WarehouseEShop/WarehouseEShop.js

@@ -25,7 +25,9 @@ Vue.component('warehouse-e-shop', {
 
                     <template v-slot:price="{ row }">
                       <span v-if="row.hasOwnProperty('calculatedSellPrice')"> {{ row.calculatedSellPrice.toFixed(2) }} €</span>
-                      <span v-else>{{ JSON.parse(row.cheapestSellPrice).find(price => price.title === 'Energie Steiermark').price.toFixed(2) }} €</span>
+                      <span v-else>{{ 
+                        Array.isArray(JSON.parse(row.cheapestSellPrice)) ? JSON.parse(row.cheapestSellPrice).find(price => price.title === 'Energie Steiermark').price.toFixed(2) :
+                        Object.values(JSON.parse(row.cheapestSellPrice)).find(price => price.title === 'Energie Steiermark').price.toFixed(2) }} €</span>
                     </template>
 
                     <template v-slot:amount="{ row }">