diff --git a/preview-1.png b/preview-1.png
deleted file mode 100644
index 272e3aa..0000000
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diff --git a/preview-2.png b/preview-2.png
deleted file mode 100644
index 240914f..0000000
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diff --git a/public/favicon.ico b/public/favicon.ico
deleted file mode 100644
index 8512439..0000000
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diff --git a/src/App.tsx b/src/App.tsx
index 2b323a1..2503557 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -1,13 +1,12 @@
 import React from 'react';
-import { Routes, Route } from 'react-router-dom';
+import { Routes, Route, Navigate } from 'react-router-dom';
 import { IntlProvider } from 'react-intl';
 import { CustomProvider } from 'rsuite';
 import enUS from 'rsuite/locales/en_GB';
 import locales from './locales';
 import Frame from './components/Frame';
 import HistogramPage from './pages/histogram';
-import Error404Page from './pages/authentication/404';
-import Error500Page from './pages/authentication/500';
+import Error404Page from './pages/404';
 import { appNavs } from './config';
 import Info from './pages/info';
 
@@ -17,11 +16,9 @@ const App = () => {
       <CustomProvider locale={enUS}>
         <Routes>
           <Route path="/" element={<Frame navs={appNavs} />}>
-            <Route index element={<HistogramPage />} />
+            <Route index element={<Navigate to="/histogram" />} />
             <Route path="histogram" element={<HistogramPage />} />
             <Route path="info" element={<Info />} />
-            <Route path="error-404" element={<Error404Page />} />
-            <Route path="error-500" element={<Error500Page />} />
           </Route>
           <Route path="*" element={<Error404Page />} />
         </Routes>
diff --git a/src/constants/index.ts b/src/constants/index.ts
deleted file mode 100644
index 8337712..0000000
--- a/src/constants/index.ts
+++ /dev/null
@@ -1 +0,0 @@
-//
diff --git a/src/pages/authentication/404/Error404.tsx b/src/pages/404/Error404.tsx
similarity index 100%
rename from src/pages/authentication/404/Error404.tsx
rename to src/pages/404/Error404.tsx
diff --git a/src/pages/authentication/404/index.ts b/src/pages/404/index.ts
similarity index 100%
rename from src/pages/authentication/404/index.ts
rename to src/pages/404/index.ts
diff --git a/src/pages/authentication/500/Error500.tsx b/src/pages/authentication/500/Error500.tsx
deleted file mode 100644
index c05665d..0000000
--- a/src/pages/authentication/500/Error500.tsx
+++ /dev/null
@@ -1,16 +0,0 @@
-import React from 'react';
-import ErrorPage from '@/components/ErrorPage';
-import { IconButton } from 'rsuite';
-import ArrowLeftLine from '@rsuite/icons/ArrowLeftLine';
-
-export default () => (
-  <ErrorPage code={500}>
-    <p className="error-page-title">Oops… You just found an error page</p>
-    <p className="error-page-subtitle text-muted ">
-      We are sorry but our server encountered an internal error
-    </p>
-    <IconButton icon={<ArrowLeftLine />} appearance="primary" href="/">
-      Take me home
-    </IconButton>
-  </ErrorPage>
-);
diff --git a/src/pages/authentication/500/index.ts b/src/pages/authentication/500/index.ts
deleted file mode 100644
index 868698a..0000000
--- a/src/pages/authentication/500/index.ts
+++ /dev/null
@@ -1,3 +0,0 @@
-import Error500 from './Error500';
-
-export default Error500;