error in infer_trajectory

[l-magnificence]

I have run successfully in dyno earlier, but error occurs when I rerun the code.
Docker is installed in linux
dynwrap::test_docker_installation(detailed = TRUE)

✔ Docker is installed
✔ Docker daemon is running
✔ Docker is at correct version (>1.0): 1.41
✔ Docker is in linux mode
✔ Docker can pull images
✔ Docker can run image
✔ Docker can mount temporary volumes
✔ Docker test successful -----------------------------------------------------------------
[1] TRUE

model <- infer_trajectory(dataset, "slingshot")

Running singularity exec 'docker://dynverse/ti_slingshot:v1.0.3' echo hi
Error in `map()`:
ℹ In index: 1.
Caused by error:
! Native call to `processx_exec` failed
Caused by error:
! cannot start processx process 'singularity' (system error 2, No such file or directory) @unix/processx.c:613 (processx_exec)