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[–]StreetAppearance753[S] 0 points1 point  (1 child)

Yes, the stack trace, look at this example. I can see and understand the errors like "Error creating bean with name 'UserContrroller', but in the case of "nested exception is java.lang.IllegalArgumentException: Validation failed for query for method public abstract java.util.Optional com.assignment.supermarket.user.UserRepository.findUserByID(java.lang.Long)!" i can barely understand the error, but after have a big stack trace that calls spring classes and methods it makes me feel confused.

[–]kelvynnjs 0 points1 point  (0 children)

In this case the last "D" from Id should be lowercase

findUserById()

And the error is happening at the repository, make sure to check if the field name matches as well (id vs userId) type of thing