Hi Gualdim,
Could I please ask what do you see if you enter LFACIF57 into transaction SE38 and click display?
It could be dumping because your LFACIF57 program does not exist, hence the ABAP statement cannot be executed.
Possibly because someone/something has deleted the program..?
Try checking all your SAP systems to see if you can find program LFACIF57 and then try and get it back into your system which is experiencing the problem.