Error in Template when generating PDF

[James_McFarlane]

Hi, 

Have not done changes to the app and am getting the following error message when generating a PDF:

Error encountered in step with name [Print invoice]: Error: 'New process 7' task 'Print Inovice' 
Body template. Expression '<u+200f><u+200f>CEILING((COUNT([Related InvoicesDetails][InvoicesDetailID])*1.00)/15)<u+200f><u+200f>' is invalid due to: Unable to find function '<u+200f><u+200f>CEILING', 
did you mean 'CEILING'?. Error: 'New process 7' task 'Print Inovice' Body template. 
Expression '(CEILING((<u+200f><u+200f>COUNT([Related InvoicesDetails][InvoicesDetailID])*1.00)/15)=
([id]+1))<u+200f><u+200f>' is invalid due to: Unable to find function '<u+200f><u+200f>COUNT', did you mean 'COUNT'?.
Error: 'New process 7' task 'Print Inovice' Body template. 'If' expression 
'(CEILING((<u+200f><u+200f>COUNT([Related InvoicesDetails][InvoicesDetailID])*1.00)/15)=([id]+1))<u+200f><u+200f>' yields
 a result of type '' rather than the expected type 'Yes/No'. Error: 'New process 7' 
task 'Print Inovice' Body template. Expression '<u+200f><u+200f>COUNT([Related InvoicesDetails]
[InvoicesDetailID])' is invalid due to: Unable to find function '<u+200f><u+200f>COUNT', 
did you mean 'COUNT'?. Error: 'New process 7' task 'Print Inovice' 
Body templ

 nbsp;encountered in step with name [Print invoice]: Error: 'New process 7' task 'Print Inovice' Body template. Expression '<u+200f><u+200f>

 nbsp;encountered in step with name [Print invoice]: Error: 'New process 7' task 'Print Inovice' Body template. Expression '<u+200f><u+200f>