Hello All,

Can anyone to fix this error please?  

Challenge Not yet complete... here's what's wrong:
There was an unexpected error while verifying this challenge. Usually this is due to some pre-existing configuration or code in the challenge Org. We recommend using a new Developer Edition (DE) to check this challenge. If you're using a new DE and seeing this error, please post to the developer forums and reference error id: IVNFKUEO

hi team,
am a fresher and a new learner for salesforce unfortunately i was unable to complete my first challange in salesforce admin below is the challenge
1.create a new custom filed on contact object called 
field label: loan amount
field tye:currency
and i have navigated to below path setup->object manager->contact->fields and relationships->new 
and nothing is happening and no dialog box is appearing
this is really frustating can someone help me if this is salesforce issue or something wrong from my end
thanks