human
Solve the following python programming problem given the following code:
def configure(app) : 
    if (app.config.get ('ENABLE_TO_PDF', False) and (not import_error)) : 
        def render_to_pdf(long_slug) : 
            return render_pdf (url_for ('quokka.core.detail', long_slug = long_slug)) 
app.add_quokka_url_rule ('/<path:long_slug>.pdf', view_func = app) 

    
    

    Fix the buggy line: app.add_quokka_url_rule ('/<path:long_slug>.pdf', view_func = app)
assistant
#Here is Python program to fix the buggy line: app.

app.add_quokka_url_rule ('/<path:long_slug>.pdf', view_func = def render_to_pdf()