Laravel two similar routes, second route not found

Laravel 5.8, I have two routes:

Route::get('/exam-info/{id}', 'ExamController@mainExamInfo')->name('main_exam_info');

Route::get('/exam/{id}', 'ExamController@startMainExam')->name('start_main_exam');

When I go to the second route it gives me "page not found" error! Why?

via Chebli Mohamed