404 page not found error in laravel

I have created a route in routes.php

 Route::group(['prefix' => 'quotation'], function () {
        Route::get('data', 'QuotationController@data');
        Route::post('send_quotation', 'QuotationController@sendQuotation');
        Route::get('{quotation}/show', 'QuotationController@show');
        Route::get('{quotation}/edit', 'QuotationController@edit');
        Route::get('{quotation}/delete', 'QuotationController@delete');
        Route::get('{quotation}/ajax_create_pdf', 'QuotationController@ajaxCreatePdf');
        Route::get('{quotation}/print_quot', 'QuotationController@printQuot');
        Route::get('{quotation}/make_invoice', 'QuotationController@makeInvoice');
       Route::get('{quotation}/approve', 'QuotationController@approve');
        Route::get('{quotation}/confirm_sales_order', 'QuotationController@confirmSalesOrder');
        Route::put('{quotation}', 'QuotationController@update');
        Route::delete('{quotation}', 'QuotationController@destroy');
        Route::get('ajax_qtemplates_products/{qtemplate}', 'QuotationController@ajaxQtemplatesProducts');
        Route::get('ajax_sales_team_list', 'QuotationController@ajaxSalesTeamList');

        Route::get('draft_quotations_list/data', 'QuotationController@draftQuotations');
        Route::get('draft_quotations', 'QuotationController@draftIndex');
    });
    Route::resource('quotation', 'QuotationController');

But when I am running the url :

quotation/34/edit

then it is showing error :

Page not Found

Please help me what I am doing wrong

via Chebli Mohamed