If you do not have a dependant but the system is asking you to enter dependant details, do not worry. This usually happens when the dependant question in your profile is set to Yes by mistake.
You can fix this in just a few steps:
Click the top right corner where it shows your name
Select My Profile
Answer No to the dependant question
Click Next to save your changes
Once saved, the dependant section will no longer appear and you can continue without any issues.