How clean remove app

please help me how to clean remove civil_contracting module.

i use command bench --site [sitename] uninstall-app [app]

no luck , civil_contracting menu still available


i have follow step by step no luck

when i run

bench --site uninstall-app civil_contracting
i get this error

its ok now after reinstall back then uninstall . now its ok.

a. uninstall civil_contracting in site

    bench --site uninstall-app civil_contracting

b. uninstall civil_contracting in other site if you install in other site.

   bench --site other_site uninstall-app civil_contracting

c. remove civil_contracting

    bench remove-app civil_contracting