Error when trying to calculate network efficiency measures (R)

Usage
1

Hello,

I have been receiving the "could not find function … " error when attempting to use the functions “global_efficiency” and “average_local_efficiency”. I have been using igraph on R (version 4.1.1) for a while and never had similar problems with other functions. Has anyone encountered the same issue and if so how can it be solved?

Thank you

2

These functions work fine on my system. Note that they were introduced in igraph 1.3.

Please show a minimal reproducible example and indicate your igraph version.