cfptRasterSAMC running error with Fletcher et al. 2022 paper's example

[ZMgogo]

when I running the following code

#get using TransitionLayer + Ne + Site locations using custom function
#custom function needed to change absorption in a pairwise manner for creating cfpt matrix
cfpt_land <- cfptRasterSAMC(TransitionLayer = land_cond,
popsize = Ne$Ne,
sites = points_spdf)

I get the error message:
unable to find an inherited method for function ‘samc’ for signature ‘"TransitionLayer", "RasterLayer", "missing", "missing"’

In samc's example, we can input data with RasterLayer format, but not TransitionLayer.

I don't know what is causing reason for error.

[ZMgogo]

Version 3 Changes

Support for creating samc-class objects from TransitionLayer objects was removed so that the package is not dependent on gdistance.

Version 2 Changes

Version 1.5.0 officially removed support for the deprecated resistance, tr_fun, directions, p_mat, latlon, and override arguments. Old code will have to be updated to the new samc() function structure in order to work.

All simulations were performed in R using the samc
package version 1.4 (Marx et al., 2020).

Haha, it is correct not to run correctly