Residual Analysis Issue

[Marinela Gjestila]

Hi,

I'm using OpenQuake engine 3.24.1,  and the oq-mbtk, downloaded from: https://github.com/GEMScienceTools/oq-mbtk.

I'm trying to run a residual analysis, but when I use the commands: 

resd = Residuals.from_toml(filename) 
resd.compute_residuals(sm_database)

It gives me the error: AttributeError: 'ContextMaker' object has no attribute 'get_ctxs'.

Is there something I should change within sm_database.py?

Thank you very much.