changes in get all suppliers

src/handlers/supplierHandler.js

@@ -985,7 +985,12 @@ exports.getSuppliers = async (req, reply) => {
 
     let tankers = await Tanker.find(tankerQuery);
 
-    if (price_from && price_to) {
+const isValidPrice = (val) => {
+  const num = parseInt(val);
+  return !isNaN(num) && isFinite(num);
+};
+
+if (isValidPrice(price_from) && isValidPrice(price_to)) {
   tankers = tankers.filter(tanker => {
     const tankerPrice = parsePrice(tanker.price);
     return tankerPrice >= priceFrom && tankerPrice <= priceTo;