strategy work item error and it;s not moving to next work item task

I have assigned automatic strategy and in which 4 work item was assigned

SOFT LETTER

SOFT CALL

MODERATE LETTER

MOD CALL

FINAL LETTER

MANUL CALL

After assigning strategy soft and moderate letter send dunning done as per specified time, but now Final letter stuck because i missed to attached template to automatic task due to this it's went into error,

Data is high is there a way if work item task went into error how to push that task if i attached missing template to strategy task.

I ran update collection strategy task but hard letter and then on the resend letter i try to resend but nothing is working