I completed in a playground the Trailhead:
Unlock Your Data with Data Cloud ! Create a Data Stream in Data Cloud | Add and Map a Formula Field
The verification said I did everything right. When I go to the Data Explorer, I can view Data Lake Objects, but not Data Model Objects.
For any object I select, I do get:
Something's not right with the query. Check the columns or filter and try again. TraceId: eceeaa94e14e382f
I tried removing colums, no avail, same error. There are no filters!
#Trailhead Challenges
@Arnab Mukherjee I wasn't really able to solve that specific issue. I created a new playground, disconnected the old Data Cloud Playground, recreated a new Data Cloud Playground. The specific Data Explorer issue still appears, but other issues went away and I was able to complete the Trailhead (Data Explorer not strictly needed, but it was suggested in the Trailhead to check results beyond trailhead validation).
It usually takes some time to update the status in Data Explorer. However we're glad that you were able to complete the challenge and have earned the badge. Could you please mark you answer as "Best Answer" to close this thread. So that it might help the fellow Trailblazer's who are facing the similar issue.
Thank You!!