Running examples in 'mwcsr-Ex.R' failed
The error most likely occurred in:

> ### Name: virgo_solver
> ### Title: Construct a virgo solver
> ### Aliases: virgo_solver
> 
> ### ** Examples
> 
> data("sgmwcs_small_instance")
> approx_vs <- virgo_solver(mst=TRUE, threads = 1)
> approx_vs$run_main("-h")
Option (* = required)                  Description                            
---------------------                  -----------                            
--benchmark, --bm                      Benchmark output file (default: )      
-c <Integer>                           Threshold for CPE solver (default: 25) 
* -e, --edges                          Edge list file                         
-h, --help                             Print a short help message             
-l, --log <Integer>                    Log level (default: 0)                 
-m, --threads <Integer>                Number of threads (default: 1)         
--mst                                  Use primal heuristic only              
* -n, --nodes                          Node list file                         
-o, --output-dir                       Solver output directory                
-p, --epsilon <Double>                 Maximum allowed absolute score error   
                                         for solver (default: 0.0)            
--pl, --preprocessing-level [Integer]  Preprocessing level (default: 2)       
-s, --signals                          Signals file                           
-t, --timelimit <Long>                 Timelimit in seconds (<= 0 -           
                                         unlimited) (default: 0)              
--type                                 One of: SGMWCS, GMWCS (default: sgmwcs)
--version                                                                     
> sol <- solve_mwcsp(approx_vs, sgmwcs_small_instance)
Error:
! The `vp` argument of `get_edge_ids()` is not allowed to be a 2 times 2
  matrix as of igraph 2.1.5.
Backtrace:
     ▆
  1. ├─mwcsr::solve_mwcsp(approx_vs, sgmwcs_small_instance)
  2. └─mwcsr:::solve_mwcsp.virgo_solver(approx_vs, sgmwcs_small_instance)
  3.   └─mwcsr:::solve_sgmwcs(solver, instance, ...)
  4.     └─mwcsr:::run_solver(...)
  5.       └─igraph::get.edge.ids(instance, t(edges[, 1:2]))
  6.         └─igraph::get_edge_ids(...)
  7.           └─igraph:::el_to_vec(vp, call = rlang::caller_env())
  8.             └─lifecycle::deprecate_stop("2.1.5", "get_edge_ids(vp = 'is not allowed to be a 2 times 2 matrix')")
  9.               └─lifecycle:::deprecate_stop0(msg)
 10.                 └─rlang::cnd_signal(...)
Execution halted