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Raksha RameshRaksha Ramesh 

Hello, while tackling the module Reports & Dashboards for Lightning Experience Visualize Your Data with the Lightning Dashboard Builder, I encountered this error, error ID: POOGPIMN

Hello, while tackling the module Reports & Dashboards for Lightning Experience  Visualize Your Data with the Lightning Dashboard Builder, I encountered this error, error ID: POOGPIMN

Below is the error detail, I have used latest DE.
"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: POOGPIMN"
Ajay K DubediAjay K Dubedi

Hi Raksha,
This issue is very common. Please have a look at the below thread:
https://developer.salesforce.com/forums/?id=906F0000000AzQdIAK 

The solution I would suggest will be creating a new fresh trailhead playground. This will surely help you to resolve this issue. 
If the problem persists again then please make sure to escalate the case to Trailhead support team.

https://trailhead.salesforce.com/en/help
Hope it helped!

Thank you,
Ajay Dubedi

SandhyaSandhya (Salesforce Developers) 
Hi,

You may get this error if you have made some changes in report and did not refresh the dashboard.Try to refresh the dashboard and then check for challenge.
 
 
Please mark it as solved if my reply was helpful. It will make it available for other as the proper solution.
                                             
Best Regards
Sandhya