Error: could not find function "veris2matrix"

[sajidrahman]

R version 3.2.0 (2015-04-16)
versir package version: verisr_2.0.6

Failed to load vcdb instance [ vcdb <- json2veris(jsondir)] into a matrix:
> vmat <- veris2matrix(vcdb) Error: could not find function "veris2matrix"

[PnYuan]

Hi, I have also met such an error, have you solved it now?
If done, please tell me a little about it, thanks...☺