Solved: Flow - keeps failing

Flow - keeps failing - but still runs

Can any one help (i am very new to Flow)- i have a flow that keeps failing, however the flow Runs as expected and the emails are sent. So i guess it is a false positive.

The flow is very simple - it checks the date in a column and if 30 days before the Renewal date or expiry date it will send a email to the Group.

The below is the Error message i am getting - However the Flow Works

ActionFailed. An action failed. No dependent actions succeeded.

Unable to process template language expressions for action 'Check_product_expiry_date' at line '1' and column '2901': 'The template language function 'formatDateTime' expects its first parameter to be of type string. The provided value is of type 'Null'. Please see https://aka.ms/logicexpressions#formatdatetime for usage details.'.

Steps taken to Resolve and Flow Test complete Successfully - However the Flow DOES NOT Work

In the 'Check product Expiry Date' i have changed the Dynamic Content to the actual column Name (rather than the expression-

formatDateTime(item()?['jl0n'], 'dd/MM/yyyy') ). the test passes but the flow does not find the any dates. my logic is that that there might be a mismatch of date formats and as such the expression puts them in all the same date format... but then i get the error, but it still works

Any help would great attached is the pictures

ralph