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Error updating image column in list

Hi, I'm trying to replicate the image column in the Acme exercise.

But this expression:

if(
  a!isNullOrEmpty(
    fv!row['recordType!{99497132-80a2-4706-85d8-9d65360812d4}Vehículo de W2690.fields.{664fc039-9187-4150-90ce-6d589788d0c2}image']
  ),
  a!EXAMPLE_DOCUMENT_IMAGE(),
  fv!row['recordType!{99497132-80a2-4706-85d8-9d65360812d4}Vehículo de W2690.fields.{664fc039-9187-4150-90ce-6d589788d0c2}image']
)

Is showing me this error:

"Expression evaluation error at function a!gridField_23r3 [line 51]: A grid component [label="null"] has an invalid value for "columns". A grid column [label="Image"] has encountered an error. Expression evaluation error at function a!imageField [line 87]: User Does Not Have Rights to Perform this Operation"

What am I doing wrong?

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