diff --git a/app/Exceptions/Handler.php b/app/Exceptions/Handler.php
index 8529d908..ea47c411 100644
--- a/app/Exceptions/Handler.php
+++ b/app/Exceptions/Handler.php
@@ -3,8 +3,7 @@
 namespace App\Exceptions;
 
 use Exception;
-use Illuminate\Validation\ValidationException;
-use Symfony\Component\HttpKernel\Exception\HttpException;
+use Illuminate\Support\Arr;
 use Illuminate\Foundation\Exceptions\Handler as ExceptionHandler;
 
 class Handler extends ExceptionHandler
@@ -13,8 +12,34 @@ class Handler extends ExceptionHandler
      * A list of the exception types that should not be reported.
      */
     protected $dontReport = [
-        HttpException::class,
-        ValidationException::class,
+        \Illuminate\Auth\AuthenticationException::class,
+        \Illuminate\Auth\Access\AuthorizationException::class,
+        \Symfony\Component\HttpKernel\Exception\HttpException::class,
+        \Illuminate\Database\Eloquent\ModelNotFoundException::class,
+        \Illuminate\Validation\ValidationException::class,
         PrettyPageException::class,
     ];
+
+    protected function convertExceptionToArray(Exception $e)
+    {
+        return [
+            'message' => $e->getMessage(),
+            'exception' => true,
+            'trace' => collect($e->getTrace())
+                ->map(function ($trace) {
+                    return Arr::only($trace, ['file', 'line']);
+                })
+                ->filter(function ($trace) {
+                    return Arr::has($trace, 'file');
+                })
+                ->map(function ($trace) {
+                    $trace['file'] = str_replace(base_path().DIRECTORY_SEPARATOR, '', $trace['file']);
+                    return $trace;
+                })
+                ->filter(function ($trace) {
+                    return \Illuminate\Support\Str::startsWith($trace['file'], 'app');
+                })
+                ->values(),
+        ];
+    }
 }
diff --git a/resources/assets/src/scripts/net.ts b/resources/assets/src/scripts/net.ts
index 470bb579..94ce5a46 100644
--- a/resources/assets/src/scripts/net.ts
+++ b/resources/assets/src/scripts/net.ts
@@ -37,20 +37,28 @@ export async function walkFetch(request: Request): Promise<any> {
     if (response.ok) {
       return body
     }
+    let message = body.message
 
-    // Process validation errors from Laravel.
     if (response.status === 422) {
+      // Process validation errors from Laravel.
       const { errors }: { message: string, errors: { [field: string]: string[] } } = body
       return {
         code: 1,
         message: Object.keys(errors).map(field => errors[field][0])[0],
       }
     } else if (response.status === 403) {
-      showModal(body.message, undefined, 'warning')
+      showModal(message, undefined, 'warning')
       return
     }
 
-    throw new HTTPError(body.message || body, cloned)
+    if (body.exception && Array.isArray(body.trace)) {
+      const trace = (body.trace as { file: string, line: number }[])
+        .map((t, i) => `[${i + 1}] ${t.file}#L${t.line}`)
+        .join('\n')
+      message = `${message}\n<details>${trace}</details>`
+    }
+
+    throw new HTTPError(message || body, cloned)
   } catch (error) {
     emit('fetchError', error)
     showAjaxError(error)
diff --git a/resources/assets/tests/scripts/net.test.ts b/resources/assets/tests/scripts/net.test.ts
index 3873d56b..4510c492 100644
--- a/resources/assets/tests/scripts/net.test.ts
+++ b/resources/assets/tests/scripts/net.test.ts
@@ -148,6 +148,21 @@ test('process backend errors', async () => {
       },
       clone: () => ({}),
     })
+    .mockResolvedValueOnce({
+      status: 500,
+      headers: new Map([['Content-Type', 'application/json']]),
+      json() {
+        return Promise.resolve({
+          message: 'fake exception',
+          exception: true,
+          trace: [
+            { file: 'k.php', line: 2 },
+            { file: 'v.php', line: 3 },
+          ],
+        })
+      },
+      clone: () => ({}),
+    })
 
   const result: {
     code: number,
@@ -158,6 +173,11 @@ test('process backend errors', async () => {
 
   await net.walkFetch({ headers: new Headers() } as Request)
   expect(showModal).toBeCalledWith('forbidden', undefined, 'warning')
+
+  await net.walkFetch({ headers: new Headers() } as Request)
+  expect(showAjaxError.mock.calls[0][0].message).toBe(
+    'fake exception\n<details>[1] k.php#L2\n[2] v.php#L3</details>'
+  )
 })
 
 test('inject to Vue instance', () => {
diff --git a/resources/misc/changelogs/en/4.4.0.md b/resources/misc/changelogs/en/4.4.0.md
index b9417bff..45864108 100644
--- a/resources/misc/changelogs/en/4.4.0.md
+++ b/resources/misc/changelogs/en/4.4.0.md
@@ -5,6 +5,7 @@
 ## Tweaked
 
 - Push notifications to queue for performance.
+- Optimized exception stack of Ajax error.
 
 ## Fixed
 
diff --git a/resources/misc/changelogs/zh_CN/4.4.0.md b/resources/misc/changelogs/zh_CN/4.4.0.md
index c56c1d40..d6531ce3 100644
--- a/resources/misc/changelogs/zh_CN/4.4.0.md
+++ b/resources/misc/changelogs/zh_CN/4.4.0.md
@@ -5,6 +5,7 @@
 ## 调整
 
 - 发送通知时将任务推送到队列
+- 优化 Ajax 中的错误显示
 
 ## 修复
 
diff --git a/tests/ExceptionsTests/HandlerTest.php b/tests/ExceptionsTests/HandlerTest.php
new file mode 100644
index 00000000..8a225a84
--- /dev/null
+++ b/tests/ExceptionsTests/HandlerTest.php
@@ -0,0 +1,18 @@
+<?php
+
+namespace Tests;
+
+use Illuminate\Support\Str;
+
+class HandlerTest extends TestCase
+{
+    public function testRenderAjaxException()
+    {
+        $json = $this->get('/abc', ['Accept' => 'application/json'])->decodeResponseJson();
+        $this->assertIsString($json['message']);
+        $this->assertTrue($json['exception']);
+        $this->assertTrue(collect($json['trace'])->every(function ($trace) {
+            return Str::startsWith($trace['file'], 'app') && is_int($trace['line']);
+        }));
+    }
+}