Sudden Error in CSOM when reading projects based on custom fields - Method "GetFieldValue" does not exist

Hi,

Having issue in reading projects based on Custom field Value.

This code was running successfully from very long back but after 7 PM Today it suddenly showing below error in every solution where we used below code.

var projects = context.LoadQuery(context.Projects.Include(p => p.Name, p => p.Id, p => p.CustomFields.Where(i => i.InternalName == "Custom_902ddd4d9ea7e51180ef00155d00db15")).Where(p => (string)p["Custom_902ddd4d9ea7e51180ef00155d00db15"] == "test"));

context.ExecuteQuery();

it is showing below error.

Method "GetFieldValue" does not exist.