Chapter 3 problem droping a collection

Hi, im having a problem with droping the collections.
i tried twice on terminal and gives 2 errors :

  • false for colletion not found
  • (Unauthorized) not authorized on admin to execute command { drop: “sample_geospatial” …

Are you dropping a collection or DB?
Please show scrennshot of the commands and errors you got

thank for reply but i think i figure it out i was tryng to drop the sample_geospatial db with db.sample_geospatial.drop() and it failed. but i tried on collection and i worked so i guess i was doing it worng.