Check to make sure dulwich is available and print error
Check to make sure dulwich is available and print error

dario-chiappetta/password-manager,clipperz/password-manager,dario-chiappetta/password-manager,cah-rfelsburg/password-manager,EasonYi/password-manager,gcsolaroli/password-manager,nikolaykhodov/clipperz-password-manager,gcsolaroli/password-manager,jokajak/password-manager,gcsolaroli/password-manager,clipperz/password-manager,cah-rfelsburg/password-manager,EasonYi/password-manager,clipperz/password-manager,bankonme/password-manager,jokajak/password-manager,nikolaykhodov/clipperz-password-manager,EasonYi/password-manager,eXcomm/password-manager,dario-chiappetta/password-manager,nikolaykhodov/clipperz-password-manager,bankonme/password-manager,nikolaykhodov/clipperz-password-manager,bankonme/password-manager,eXcomm/password-manager,studio666/password-manager,studio666/password-manager,bankonme/password-manager,gcsolaroli/password-manager,eXcomm/password-manager,EasonYi/password-manager,dario-chiappetta/password-manager,dario-chiappetta/password-manager,cah-rfelsburg/password-manager,studio666/password-manager,studio666/password-manager,bankonme/password-manager,studio666/password-manager,eXcomm/password-manager,gcsolaroli/password-manager,jokajak/password-manager,clipperz/password-manager,jokajak/password-manager,jokajak/password-manager,eXcomm/password-manager,cah-rfelsburg/password-manager,EasonYi/password-manager,clipperz/password-manager,cah-rfelsburg/password-manager