diff --git a/src/background.js b/src/background.js
index cf95902..f540832 100644
--- a/src/background.js
+++ b/src/background.js
@@ -115,91 +115,42 @@ browser.runtime.onStartup.addListener(async () => {
 /**
  * 监听消息
  */
-browser.runtime.onMessage.addListener(
-  ({ action, args }, sender, sendResponse) => {
-    switch (action) {
-      case MSG_FETCH:
-        const { input, opts } = args;
-        fetchData(input, opts)
-          .then((data) => {
-            sendResponse({ data });
-          })
-          .catch((error) => {
-            sendResponse({ error: error.message, cause: error.cause });
-          });
-        break;
-      case MSG_FETCH_LIMIT:
-        const { interval, limit } = args;
-        fetchPool.update(interval, limit);
-        sendResponse({ data: "ok" });
-        break;
-      case MSG_FETCH_CLEAR:
-        fetchPool.clear();
-        sendResponse({ data: "ok" });
-        break;
-      case MSG_OPEN_OPTIONS:
-        browser.runtime.openOptionsPage();
-        sendResponse({ data: "ok" });
-        break;
-      case MSG_SAVE_RULE:
-        saveRule(args);
-        sendResponse({ data: "ok" });
-        break;
-      case MSG_INJECT_JS:
-        getCurTabId()
-          .then((tabId) =>
-            browser.scripting.executeScript({
-              target: { tabId: tabId, allFrames: true },
-              func: injectInlineJs,
-              args: [args],
-              world: "MAIN",
-            })
-          )
-          .then(() => {
-            sendResponse({ data: "ok" });
-          })
-          .catch((error) => {
-            sendResponse({ error: error.message });
-          });
-        break;
-      case MSG_INJECT_CSS:
-        getCurTabId()
-          .then((tabId) =>
-            browser.scripting.executeScript({
-              target: { tabId: tabId, allFrames: true },
-              func: injectInternalCss,
-              args: [args],
-              world: "MAIN",
-            })
-          )
-          .then(() => {
-            sendResponse({ data: "ok" });
-          })
-          .catch((error) => {
-            sendResponse({ error: error.message });
-          });
-        break;
-      case MSG_CONTEXT_MENUS:
-        const { contextMenuType } = args;
-        addContextMenus(contextMenuType);
-        sendResponse({ data: "ok" });
-        break;
-      case MSG_COMMAND_SHORTCUTS:
-        browser.commands
-          .getAll()
-          .then((commands) => {
-            sendResponse({ data: commands });
-          })
-          .catch((error) => {
-            sendResponse({ error: error.message });
-          });
-        break;
-      default:
-        sendResponse({ error: `message action is unavailable: ${action}` });
-    }
-    return true;
+browser.runtime.onMessage.addListener(async ({ action, args }) => {
+  switch (action) {
+    case MSG_FETCH:
+      const { input, opts } = args;
+      return await fetchData(input, opts);
+    case MSG_FETCH_LIMIT:
+      const { interval, limit } = args;
+      return fetchPool.update(interval, limit);
+    case MSG_FETCH_CLEAR:
+      return fetchPool.clear();
+    case MSG_OPEN_OPTIONS:
+      return await browser.runtime.openOptionsPage();
+    case MSG_SAVE_RULE:
+      return await saveRule(args);
+    case MSG_INJECT_JS:
+      return await browser.scripting.executeScript({
+        target: { tabId: await getCurTabId(), allFrames: true },
+        func: injectInlineJs,
+        args: [args],
+        world: "MAIN",
+      });
+    case MSG_INJECT_CSS:
+      return await browser.scripting.executeScript({
+        target: { tabId: await getCurTabId(), allFrames: true },
+        func: injectInternalCss,
+        args: [args],
+        world: "MAIN",
+      });
+    case MSG_CONTEXT_MENUS:
+      return await addContextMenus(args.contextMenuType);
+    case MSG_COMMAND_SHORTCUTS:
+      return await browser.commands.getAll();
+    default:
+      throw new Error(`message action is unavailable: ${action}`);
   }
-);
+});
 
 /**
  * 监听快捷键
diff --git a/src/libs/fetch.js b/src/libs/fetch.js
index ba26cf7..8ec1a17 100644
--- a/src/libs/fetch.js
+++ b/src/libs/fetch.js
@@ -138,13 +138,14 @@ export const fetchData = async (
     }
 
     if (!res?.ok) {
-      const cause = {
+      const msg = {
+        url: input,
         status: res.status,
       };
       if (res.headers.get("Content-Type")?.includes("json")) {
-        cause.body = await res.json();
+        msg.response = await res.json();
       }
-      throw new Error(`response: [${res.status}] ${res.statusText}`, { cause });
+      throw new Error(JSON.stringify(msg));
     }
 
     // 插入缓存
@@ -178,11 +179,7 @@ export const fetchPolyfill = async (input, opts) => {
 
   // 插件
   if (isExt && !isBg()) {
-    const res = await sendBgMsg(MSG_FETCH, { input, opts });
-    if (res.error) {
-      throw new Error(res.error, { cause: res.cause });
-    }
-    return res.data;
+    return await sendBgMsg(MSG_FETCH, { input, opts });
   }
 
   // 油猴/网页/BackgroundPage
@@ -196,10 +193,7 @@ export const fetchPolyfill = async (input, opts) => {
  */
 export const updateFetchPool = async (interval, limit) => {
   if (isExt) {
-    const res = await sendBgMsg(MSG_FETCH_LIMIT, { interval, limit });
-    if (res.error) {
-      throw new Error(res.error);
-    }
+    await sendBgMsg(MSG_FETCH_LIMIT, { interval, limit });
   } else {
     fetchPool.update(interval, limit);
   }
@@ -210,10 +204,7 @@ export const updateFetchPool = async (interval, limit) => {
  */
 export const clearFetchPool = async () => {
   if (isExt) {
-    const res = await sendBgMsg(MSG_FETCH_CLEAR);
-    if (res.error) {
-      throw new Error(res.error);
-    }
+    await sendBgMsg(MSG_FETCH_CLEAR);
   } else {
     fetchPool.clear();
   }
diff --git a/src/views/Content/LoadingIcon.js b/src/views/Content/LoadingIcon.js
index 614a824..0cf4eb1 100644
--- a/src/views/Content/LoadingIcon.js
+++ b/src/views/Content/LoadingIcon.js
@@ -2,7 +2,7 @@ import { loadingSvg } from "../../libs/svg";
 
 export default function LoadingIcon() {
   return (
-    <div
+    <span
       style={{
         display: "inline-block",
         width: "1.2em",
diff --git a/src/views/Options/Apis.js b/src/views/Options/Apis.js
index 660834c..ed1424e 100644
--- a/src/views/Options/Apis.js
+++ b/src/views/Options/Apis.js
@@ -50,16 +50,22 @@ function TestButton({ translator, api }) {
       alert.success(i18n("test_success"));
     } catch (err) {
       // alert.error(`${i18n("test_failed")}: ${err.message}`);
+      let msg = err.message;
+      try {
+        msg = JSON.stringify(JSON.parse(err.message), null, 2);
+      } catch (err) {
+        // skip
+      }
       alert.error(
         <>
-          <div>{`${i18n("test_failed")}: ${err.message}`}</div>
+          <div>{i18n("test_failed")}</div>
           <pre
             style={{
               maxWidth: 400,
               overflow: "auto",
             }}
           >
-            {JSON.stringify(err.cause || {}, null, 2)}
+            {msg}
           </pre>
         </>
       );
@@ -124,7 +130,9 @@ function ApiFields({ translator }) {
             onChange={handleChange}
             multiline={mulkeysTranslators.includes(translator)}
             helperText={
-              mulkeysTranslators.includes(translator) ? i18n("mulkeys_help") : ""
+              mulkeysTranslators.includes(translator)
+                ? i18n("mulkeys_help")
+                : ""
             }
           />
         </>
diff --git a/src/views/Popup/index.js b/src/views/Popup/index.js
index d11daa3..9c01f8d 100644
--- a/src/views/Popup/index.js
+++ b/src/views/Popup/index.js
@@ -119,11 +119,9 @@ export default function Popup({ setShowPopup, translator: tran }) {
         const commands = {};
         if (isExt) {
           const res = await sendBgMsg(MSG_COMMAND_SHORTCUTS);
-          if (!res.error) {
-            res.data.forEach(({ name, shortcut }) => {
-              commands[name] = shortcut;
-            });
-          }
+          res.forEach(({ name, shortcut }) => {
+            commands[name] = shortcut;
+          });
         } else {
           const shortcuts = tran.setting.shortcuts;
           if (shortcuts) {