diff --git a/package.json b/package.json
index c8cc23e..9ccff0a 100644
--- a/package.json
+++ b/package.json
@@ -58,5 +58,6 @@
 		"vite": "^3.1.8",
 		"vitest": "^0.24.3"
 	},
-	"type": "module"
-}
\ No newline at end of file
+	"type": "module",
+	"dependencies": {}
+}
diff --git a/src/lib/services/events.service.ts b/src/lib/services/events.service.ts
index e0a6a5d..294e887 100644
--- a/src/lib/services/events.service.ts
+++ b/src/lib/services/events.service.ts
@@ -190,7 +190,7 @@ export function createEventsService(iframeUrl: string, authService: AuthService,
 
         const quotePayload = <TransactionRequest>payload;
 
-        const callback = (quote: Quote) => sendEvent(frame, Events.QUOTE_CHANGED, { quote });
+        const callback = (quote: Quote | null, err: any) => sendEvent(frame, Events.QUOTE_CHANGED, { quote, err });
         quoteService.startQuote(quotePayload, callback);
     }
 
@@ -202,10 +202,12 @@ export function createEventsService(iframeUrl: string, authService: AuthService,
         if (!frame) throw new Error("Iframe not ready");
 
         try {
-            let paymentInfo = <PaymentInfo>{};
+            const paymentInfo = <PaymentInfo>{};
             paymentInfo.cardToken = event.data.cardToken;
-            let data = <ExecutionRequest>event.data;
+
+            const data = <ExecutionRequest>event.data;
             data.paymentInfo = paymentInfo;
+
             const txHash = await apiClient.transact(data);
             sendEvent(frame, Events.RECEIVE_CONFIRM_TRANSACTION, txHash);
         } catch (error: any) {
diff --git a/src/lib/services/quote.service.ts b/src/lib/services/quote.service.ts
index c549250..b09eb17 100644
--- a/src/lib/services/quote.service.ts
+++ b/src/lib/services/quote.service.ts
@@ -3,14 +3,14 @@ import type { ApiClient, TransactionRequest, Quote } from './apiClient.service';
 export function createQuoteService(apiClient: ApiClient): QuoteService {
 	let interval: NodeJS.Timer | undefined;
 
-	async function startQuote(payload: TransactionRequest, callback: (payload: Quote) => void) {
-		refreshQuote(payload, callback);
+	async function startQuote(payload: TransactionRequest, callback: (quote: Quote | null, err: any) => void) {
+		_refreshQuote(payload, callback);
 
 		if (interval) {
 			clearInterval(interval);
 		}
 
-		interval = setInterval(() => refreshQuote(payload, callback), 10000);
+		interval = setInterval(() => _refreshQuote(payload, callback), 10000);
 	}
 
 	function stopQuote() {
@@ -18,24 +18,23 @@ export function createQuoteService(apiClient: ApiClient): QuoteService {
 		interval = undefined;
 	}
 
-	async function refreshQuote(payload: TransactionRequest, callback: (payload: Quote) => void) {
+	async function _refreshQuote(payload: TransactionRequest, callback: (quote: Quote | null, err: any) => void) {
 		try {
 			const quote = await apiClient.getQuote(payload);
-			callback(quote);
-		} catch (e) {
-			console.debug('-- refresh quote error --', e);
+			callback(quote, null);
+		} catch (err: any) {
+			console.debug('-- refresh quote error --', err);
+			callback(null, err);
 		}
 	}
 
 	return {
 		startQuote,
 		stopQuote,
-		refreshQuote,
 	};
 }
 
 export interface QuoteService {
-	startQuote: (payload: TransactionRequest, callback: (payload: Quote) => void) => Promise<void>;
+	startQuote: (payload: TransactionRequest, callback: (quote: Quote | null, err: any) => void) => Promise<void>;
 	stopQuote: () => void;
-	refreshQuote: (payload: TransactionRequest, callback: (payload: Quote) => void) => Promise<void>;
 }
\ No newline at end of file
diff --git a/yarn.lock b/yarn.lock
index ba7ed79..8a58f3d 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1251,15 +1251,10 @@ caniuse-api@^3.0.0:
     lodash.memoize "^4.1.2"
     lodash.uniq "^4.5.0"
 
-caniuse-lite@^1.0.0:
-  version "1.0.30001419"
-  resolved "https://registry.yarnpkg.com/caniuse-lite/-/caniuse-lite-1.0.30001419.tgz#3542722d57d567c8210d5e4d0f9f17336b776457"
-  integrity sha512-aFO1r+g6R7TW+PNQxKzjITwLOyDhVRLjW0LcwS/HCZGUUKTGNp9+IwLC4xyDSZBygVL/mxaFR3HIV6wEKQuSzw==
-
-caniuse-lite@^1.0.30001400, caniuse-lite@^1.0.30001407:
-  version "1.0.30001412"
-  resolved "https://registry.yarnpkg.com/caniuse-lite/-/caniuse-lite-1.0.30001412.tgz#30f67d55a865da43e0aeec003f073ea8764d5d7c"
-  integrity sha512-+TeEIee1gS5bYOiuf+PS/kp2mrXic37Hl66VY6EAfxasIk5fELTktK2oOezYed12H8w7jt3s512PpulQidPjwA==
+caniuse-lite@^1.0.0, caniuse-lite@^1.0.30001400, caniuse-lite@^1.0.30001407:
+  version "1.0.30001480"
+  resolved "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001480.tgz"
+  integrity sha512-q7cpoPPvZYgtyC4VaBSN0Bt+PJ4c4EYRf0DrduInOz2SkFpHD5p3LnvEpqBp7UnJn+8x1Ogl1s38saUxe+ihQQ==
 
 chai@^4.3.6:
   version "4.3.6"