Symfony routing is not working?

I am working on existing project. I have following two URLs

http://example.dev/en/course/myUserName/myCourseName/150/myChapterName/1016/page/1/?hcid=147



http://example.dev/en/course/myUserName/myCourseName/150/myChapterName/1016/page/2/?hcid=147

2nd URL is working fine but 1st URL is giving me following error :

Unable to find a matching route to generate url for params "array (  'action' => 'showChapter',  'module' => 'course',  'courseowner' => 'myUserName',  'coursename' => 'myCourseName',  'courseid' => '150',  'chaptername' => 'myChapterName',)"., 

referer: http://example.dev/en/course/myUserName/myCourseName/150/myChapterName/1016/page/1/?hcid=147

I have following entry in routing.yml :

course_chapter:

  url: /:sf_culture/course/:courseowner/:coursename/:courseid/:chaptername/:chapterid/:page/:pageid/

  param: { module: course, action: showChapter }

  requirements:

      courseid: \d+

I cant understand how it is working for 2nd URL and not for first URL. I have checked the action and view and I did not find any error.

Any Idea or debugging technique ??