ascend EMSet object bug

[atomnh]

I am using ascend according to the published paper (https://academic.oup.com/gigascience/article/8/8/giz087/5554286#140534041), and find that the command to create the EMSet is fine, but then I type "EMSet" to check what this object is, or perform QC as well as other operation it always company with this error information. Could you please tell me what’s wrong about it? What can I do to fix it? I use the ascend_0.99.69.
I follow the command as the paper listed, command for EMSet construction:
EMSet <- EMSet(counts, colInfo = colInfo, controls = controls)
EMSet

The error information is:
Error in (function (classes, fdef, mtable) :
unable to find an inherited method for function ‘int_colData’ for signature ‘"NULL”’

I tried to add colData to EMSet function, but it still end with same bug. Thanks for your attention!