Regression learner error in matlab code

When i use

yfit = trainedModel.predictFcn(cartable)

to test for Test data using regression learner , i am getting the below error.

Unable to use a value of type 'cell' as an index..

Kindly help to fix this

[Pratyush Roy]

Hi,

Can you share the full code so that we can reproduce the error from our side?