Now I'm trying to use LOFTEE for loss-of-function variant annotation. Since LOFTEE is used in combination with VEP,

my command line is using the VEP example input:

./vep -i examples/homo_sapiens_GRCh37.vcf --cache -offline --force_overwrite --plugin LoF,loftee_path:loftee --dir_plugins loftee

I got the annotation by VEP indeed.

But the problem is that LOFTEE doesn't annotate at all. Some result instruction lines written like this were in the output files:

##LoF : Loss-of-function annotation (HC = High Confidence; LC = Low Confidence)
##LoF_filter : Reason for LoF not being HC
## LoF_flags : Possible warning flags for LoF
## LoF_info : Info used for LoF annotation

But the results actually doesn't contain these LOFTEE annotations.

Why?