The error I get is
Unable to process template language expressions in action 'Compose' inputs at line '1' and column '2877': 'The template language expression 'triggerBody()['text_6']' cannot be evaluated because property 'text_6' doesn't exist, available properties are 'text, text_1, text_2, text_3, boolean, boolean_1'.
I've tried the following formula, found here, but it's not working.
if(empty(outputs('Compose')),null,outputs('Compose'))
The result should be that this value is entered in an excel sheet. There are plenty of other fields in this flow that don't cause a problem when left blank. It's only when I add this item and leave it blank that an issue occurs.

