Hey Francis Lazar !

By the way, you opened the wrong module.

Try opening AutoDockTool and load your molecule to perform molecular docking. (PS: AutoDockTool has a blue color icon with a white background.)

if you still face difficulty in finding AutoDockTool, simply open your PowerShell or command prompt and type adt in the command line

Addition to the given answer, be sure the that the molecule is saved in a format readable by Autodock tools

Abdeen Tunde Ogunlana Thanks for taking your time and replying to my questions, the error still sustains in the same manner.

Mohamed asif Shajahan Thanks for taking your time and replying to my questions, the error still sustains in the same manner.

not clear how you draw structure ie by which software.

you draw structure first and conver in to 3d structrue then convert in to pdb and then open in mgl tools you look the ligand structure

ideally we download the structure from https://www.rcsb.org/