Laravel中的AJAX调用返回Http异常

当我尝试在laravel中使用ajax时，它显示以下错误，

{“message”：“”，“exception”：“Symfony \ Component \ HttpKernel \ Exception \ HttpException”，“file”：“C：\ xampp \ htdocs \ TravelAssistant \ vendor \ laravel \ framework \ src \ Illuminate \ Foundation \ Exceptions \ Handler.php“，”line“：203，”trace“：[{”file“：”C：\ xampp \ htdocs \ TravelAssistant \ vendor \ laravel \ framework \ src \ Illuminate \ Foundation \ Exceptions \ Handler . php“，”“line”：175，“function”：“prepareException”，“class”：“Illuminate \ Foundation \ Exceptions \ Handler”，“type”：“ - >”}，{“file”：“C：\ xampp \ htdocs \ TravelAssistant \ app \ Exceptions \ Handler.php“，”line“：49，”function“：”render“，”class“：”Illuminate \ Foundation \ Exceptions \ Handler“，”type“：” - > “}，{”file“：”C：\ xampp \ htdocs \ TravelAssistant \ vendor \ laravel \ framework \ src \ Illuminate \ Routing \ Pipeline.php“，”line“：83，”function“：”render“，” class“：”App \ Exceptions \ Handler“，”type“：” - >“}，{”file“：”C：\ xampp \ htdocs \ TravelAssistant \ vendor \ laravel \ framework \ src \ Illuminate \ Routing \ Pipeline . php“，”line“：55，”function“：”handleException“，”class“：”Illuminate \ Ro uting \ Pipeline“，”type“：” - >“}，{”file“：”C：\ xampp \ htdocs \ TravelAssistant \ vendor \ laravel \ framework \ src \ Illuminate \ View \ Middleware \ ShareErrorsFromSession.php“，” line“：49，”function“：”Illuminate \ Routing \ “，”class“：”Illuminate \ Routing \ Pipeline“，”type“：” - >“}，{”file“：”C：\ xampp \ htdocs \ TravelAssistant \ vendor \ laravel \ framework \ src \ Illuminate \ Pipeline \ Pipeline.php“，”line“：151，”function“：”handle“，”class“：”Illuminate \ View \ Middleware \ ShareErrorsFromSession“ ，“type”：“ - >”}，{“file”：“C：\ xampp \ htdocs \ TravelAssistant \ vendor \ laravel \ framework \ src \ Illuminate \ Routing \ Pipeline.php”，“line”：53，“ function“：”Illuminate \ Pipeline \ “，”class“：”Illuminate \ Pipeline \ Pipeline“，”type“：” - >“}，{”file“：”C：\ xampp \ htdocs \ TravelAssistant \ vendor \ laravel \ framework \ src \ Illuminate \ Session \ Middleware \ StartSession.php“，”line“：63，”function“：”Illuminate \ Routing \ “，”class“：”Illuminate \ Routing \ Pipeline“ ，“type”：“ - >”}，{“file”：“C：\ xampp \ htdocs \ TravelAssistant \ vendor \ lara vel \ framework \ src \ Illuminate \ Pipeline \ Pipeline.php“，”line“：151，”function“：”handle“，”class“：”Illuminate \ Session \ Middleware \ StartSession“，”type“：” - > “}，{”file“：”C：\ xampp \ htdocs \ TravelAssistant \ vendor \ laravel \ framework \ src \ Illuminate \ Routing \ Pipeline.php“，”line“：53，”function“：”Illuminate \ Pipeline \ “，”class“：”Illuminate \ Pipeline \ Pipeline“，”type“：” - >“}，{”file“：”C：\ xampp \ htdocs \ TravelAssistant \ vendor \ laravel \ framework \ src \ Illuminate \ Cookie \ Middleware \ AddQueuedCookiesToResponse.php“，”line“：37，”function“：”Illuminate \ Routing \ “，”class“：”Illuminate \ Routing \ Pipeline“，”type“：” - > “}，{”file“：”C：\ xampp \ htdocs \ TravelAssistant \ vendor \ laravel \ framework \ src \ Illuminate \ Pipeline \ Pipeline.php“，”line“：151，”function“：”handle“，” class“：”Illuminate \ Cookie \ Middleware \ AddQueuedCookiesToResponse“，”type“：” - >“}，{”file“：”C：\ xampp \ htdocs \ TravelAssistant \ vendor \ laravel \ framework \ src \ Illuminate \ Routing \ Pipeline.php“，”line“：53，”function“：”Illuminate \ Pipelin e \ “，”class“：”Illuminate \ Pipeline \ Pipeline“，”type“：” - >“}，{”file“：”C：\ xampp \ htdocs \ TravelAssistant \ vendor \ laravel \ framework \ src \ Illuminate \ Cookie \ Middleware \ EncryptCookies.php“，”line“：59，”function“：”Illuminate \ Routing \ “，”class“：”Illuminate \ Routing \ Pipeline“，”type“：” - >“}，{”file“：”C：\ xampp \ htdocs \ TravelAssistant \ vendor \ laravel \ framework \ src \ Illuminate \ Pipeline \ Pipeline.php“，”line“：151，”function“：”handle“ ，“class”：“Illuminate \ Cookie \ Middleware \ EncryptCookies”，“type”：“ - >”}，{“file”：“C：\ xampp \ htdocs \ TravelAssistant \ vendor \ laravel \ framework \ src \ Illuminate \ Routing \ Pipeline.php“，”line“：53，”function“：”Illuminate \ Pipeline \ “，”class“：”Illuminate \ Pipeline \ Pipeline“，”type“：” - >“}，{ “file”：“C：\ xampp \ htdocs \ TravelAssistant \ vendor \ laravel \ framework \ src \ Illuminate \ Pipeline \ Pipeline.php”，“line”：104，“function”：“Illuminate \ Routing \ ” ，“class”：“Illuminate \ Routing \ Pipeline”，“type”：“ - >”}，{“file”：“C：\ xampp \ htdocs \ TravelAssistan t \ vendor \ laravel \ framework \ src \ Illuminate \ Routing \ Router.php“，”line“：667，”function“：”then“，”class“：”Illuminate \ Pipeline \ Pipeline“，”type“：” - >“}，{”file“：”C：\ xampp \ htdocs \ TravelAssistant \ vendor \ laravel \ framework \ src \ Illuminate \ Routing \ Router.php“，”line“：642，”function“：”runRouteWithinStack“ ，“class”：“Illuminate \ Routing \ Router”，“type”：“ - >”}，{“file”：“C：\ xampp \ htdocs \ TravelAssistant \ vendor \ laravel \ framework \ src \ Illuminate \ Routing \ Router.php”，“line”：608，“function”：“runRoute”，“class”：“Illuminate \ Routing \”路由器“，”键入“：” - >“}，{”file“：”C：\ xampp \ htdocs \ TravelAssistant \ vendor \ laravel \ framework \ src \ Illuminate \ Routing \ Router.php“，”line“：597 ，“function”：“dispatchToRoute”，“class”：“Illuminate \ Routing \ Router”，“type”：“ - >”}，{“file”：“C：\ xampp \ htdocs \ TravelAssistant \ vendor \ laravel \ framework \ src \ Illuminate \ Foundation \ Http \ Kernel.php“，”line“：176，”function“：”dispatch“，”class“：”Illuminate \ Routing \ Router“，”type“：” - >“} ，{“file”：“C：\ xampp \ htdocs \ TravelAssistant \ vendor \ laravel \ framework \ src \ Illuminate \ Routing \ Pipeline.php”，“line”：30，“function”：“Illuminate \ Foundation \ Http \ “，”class“：”Illuminate \ Foundation \ Http \ Kernel“，”type“：” - >“}，{”file“：”C：\ xampp \ htdocs \ TravelAssistant \ vendor \ fideloper \ proxy \ src \ TrustProxies.php“，”line“：57，”function“：”Illuminate \ Routing \ “，”class“：”Illuminate \ Routing \ Pipe“ line“，”type“：” - >“}，{”file“：”C：\ xampp \ htdocs \ TravelAssistant \ vendor \ laravel \ framework \ src \ Illuminate \ Pipeline \ Pipeline.php“，”line“：151 ，“function”：“handle”，“class”：“Fideloper \ Proxy \ TrustProxies”，“type”：“ - >”}，{“file”：“C：\ xampp \ htdocs \ TravelAssistant \ vendor \ laravel \ framework \ src \ Illuminate \ Routing \ Pipeline.php“，”line“：53，”function“：”Illuminate \ Pipeline \ “，”class“：”Illuminate \ Pipeline \ Pipeline“，”type“：” - >“}，{”file“：”C：\ xampp \ htdocs \ TravelAssistant \ vendor \ laravel \ framework \ src \ Illuminate \ Foundation \ Http \ Middleware \ TransformsRequest.php“，”line“：31，”function“ ：“Illuminate \ Routing \ ”，“class”：“Illuminate \ Routing \ Pipeline”，“type”：“ - >”}，{“file”：“C：\ xampp \ htdocs \ TravelAssistant \ vendor \ laravel \ framework \ src \ Illuminate \ Pipeline \ Pipeline.php“，”line“：151，”function“：”handle“，”class“：”Illuminate \ Foundation \ Http \ Middleware \ TransformsRequest“，”type“：” - >“}，{”file“：”C：\ xampp \ htdocs \ TravelAssistant \ vendor \ laravel \ framework \ src \ Illuminate \ Rou ting \ Pipeline.php“，”line“：53，”function“：”Illuminate \ Pipeline \ “，”class“：”Illuminate \ Pipeline \ Pipeline“，”type“：” - >“}，{ “file”：“C：\ xampp \ htdocs \ TravelAssistant \ vendor \ laravel \ framework \ src \ Illuminate \ Foundation \ Http \ Middleware \ TransformsRequest.php”，“line”：31，“function”：“Illuminate \ Routing \” “，”class“：”Illuminate \ Routing \ Pipeline“，”type“：” - >“}，{”file“：”C：\ xampp \ htdocs \ TravelAssistant \ vendor \ laravel \ framework \ src \ Illuminate \ Pipeline \ Pipeline.php“，”line“：151，”function“：”handle“，”class“：”Illuminate \ Foundation \ Http \ Middleware \ TransformsRequest“，”type“：” - >“}，{ “file”：“C：\ xampp \ htdocs \ TravelAssistant \ vendor \ laravel \ framework \ src \ Illuminate \ Routing \ Pipeline.php”，“line”：53，“function”：“Illuminate \ Pipeline \ ” ，“class”：“Illuminate \ Pipeline \ Pipeline”，“type”：“ - >”}，{“file”：“C：\ xampp \ htdocs \ TravelAssistant \ vendor \ laravel \ framework \ src \ Illuminate \ Foundation \ Http \ Middleware \ ValidatePostSize.php“，”line“：27，”function“：”Illuminate \ Routi ng \ “，”class“：”Illuminate \ Routing \ Pipeline“，”type“：” - >“}，{”file“：”C：\ xampp \ htdocs \ TravelAssistant \ vendor \ laravel \ framework \ src \ Illuminate \ Pipeline \ Pipeline.php“，”line“：151，”function“：”handle“，”class“：”Illuminate \ Foundation \ Http \ Middleware \ ValidatePostSize“，”type“：” - >“} ，{“file”：“C：\ xampp \ htdocs \ TravelAssistant \ vendor \ laravel \ framework \ src \ Illuminate \ Routing \ Pipeline.php”，“line”：53，“function”：“Illuminate \ Pipeline \ “，”class“：”Illuminate \ Pipeline \ Pipeline“，”type“：” - >“}，{”file“：”C：\ xampp \ htdocs \ TravelAssistant \ vendor \ laravel \ framework \ src \ Illuminate \ Foundation \ Http \ Middleware \ CheckForMaintenanceMode.php“，”line“：62，”function“：”Illuminate \ Routing \ “，”class“：”Illuminate \ Routing \ Pipeline“，”type“：” - > “}，{”file“：”C：\ xampp \ htdocs \ TravelAssistant \ vendor \ laravel \ framework \ src \ Illuminate \ Pipeline \ Pipeline.php“，”line“：151，”function“：”handle“，” class“：”Illuminate \ Foundation \ Http \ Middleware \ CheckForMaintenanceMode“，”type“：” - >“}， {“file”：“C：\ xampp \ htdocs \ TravelAssistant \ vendor \ laravel \ framework \ src \ Illuminate \ Routing \ Pipeline.php”，“line”：53，“function”：“Illuminate \ Pipeline \ “，”class“：”Illuminate \ Pipeline \ Pipeline“，”type“：” - >“}，{”file“：”C：\ xampp \ htdocs \ TravelAssistant \ vendor \ laravel \ framework \ src \ Illuminate \ Pipeline \ Pipeline.php“，”line“：104，”function“：”Illuminate \ Routing \ “，”class“：”Illuminate \ Routing \ Pipeline“，”type“：” - >“}，{”文件”：“C：\ xampp \ htdocs \ TravelAssistant \ vendor \ laravel \ framework \ src \ Illuminate \ Foundation \ Http \ Kernel.php”，“line”：151，“function”：“then”，“class”：“Illuminate \ Pipeline \ Pipeline“，”type“：” - >“}，{”file“：”C：\ xampp \ htdocs \ TravelAssistant \ vendor \ laravel \ framework \ src \ Illuminate \ Foundation \ Http \ Kernel.php“，” line“：116，”function“：”sendRequestThroughRouter“，”class“：”Illuminate \ Foundation \ Http \ Kernel“，”type“：” - >“}，{”file“：”C：\ xampp \ htdocs \ TravelAssistant \ public \ index.php“，”line“：55，”function“：”handle“，”class“：”Illuminate \ Foundation \ Http \ Kernel“，”type“：” - >“}，{”file “：”C：\ xampp \ htdocs \ TravelAssistant \ server.php“，”line“：21，”function“：”require_once“}]}

我的控制器代码是，

public function getPublicAttraction(Request $request)
    {
        return response(['msg'=>'success']);
    }

ajax电话，

<script>
    function getAttraction()
    {

        var pass= {'_token':$('meta[name="csrf-token"]').attr('content')

    };
    $.ajax({
            type:'POST',
            url:'{{route("Attractions")}}',
            datatype:'json',
            data: pass,
            success:function(data){
                $("#public_attractions").html(data.msg);
            }
        }).fail(function(jqXHR, textStatus, error){
            $("#public_attractions").html(jqXHR.responseText);
        });


    }
    $(document).ready(function(){
         getAttraction();
    });
</script>

带有csrf令牌的元标记，

<meta name="csrf-token" content="!!{csrf_token()}!!">

路由文件web.php条目，

Route::post('/getAttractions','AjaxController@getPublicAttraction')->name('Attractions');

我想我被卡住了，请帮忙 .