ERROR in iris.script

[r-cemper]

#22 22.18 Loading file /data/NLPUtils.cls as cls
#22 22.18 ERROR #16008: Unable to load text for '%ML.NLPUtils.cls'
#22 22.18 > ERROR #16000: Line:0 Offset:0 Error 'Class name is invalid [8067000A]'
#22 22.19 Loading file /data/src/Util/Loader.cls as cls
#22 22.19 Imported class: Util.Loader
#22 22.19 ERROR #16008: Unable to load text for '%ML.NLPUtils.cls'
#22 22.19 > ERROR #16000: Line:0 Offset:0 Error 'Class name is invalid [8067000A]'

it's caused by this sequence
// Load all the class definitions from the data directory
do $system.OBJ.LoadDir("/data","cuk",,1)

and
.../integratedml-demo-template/ris-aa-server/data/NLPUtils.cls

Loading %ML.NLPUtils.cls requires WRITE access to IRISSYS. !!
That's a NO-NO for demo

Checking the examples, I found no evidence that it is referenced or required at all.