Using isimip3 method throws ModuleNotFoundError error

[cs2239]

I have latest version of miniconda installed and added dask. This all works fine. However, using biasCorrection() in RStudio on a GCE ubuntu VM to invoke isimip3 method does not. (Otherwise climate4R suite runs without issue I should add.) An example follows:

z1 <- biasCorrection(y=y,x=x,newdata=newdata_pre,method="isimip3")
Time difference of 1 days
Time difference of 1 days
Time difference of 1 days
[2021-04-26 08:55:28] Argument precipitation is set as FALSE, please ensure that this matches your data.
[2021-04-26 08:57:59] Number of windows considered: 1...
[2021-04-26 08:58:28] Bias-correcting 1 members separately...
Error in py_run_file_impl(file, local, convert) :
ModuleNotFoundError: No module named 'dask'

I would be appreciative of any ideas on how to fix. SO and the usual suspects have not yet been helpful. I should note dask module is indeed installed.