File transfer between clusters not working for files, only for directories

[atemate]

Failing:

root@hello:~# neuro-extras data transfer storage://neuro-compute/yevheniisemendiak/startup_package_test/mlruns/0/bd26789fb5c6441f8a31f4a8da596853/artifacts/model/data/model.h5 storage://onprem-poc/artemyushkovskiy/startup_package_test/mlruns/0/bd26789fb5c6441f8a31f4a8da596853/artifacts/model/data/model.h5
INFO: Already on cluster: onprem-poc
Running 'neuro run -s cpu-small --pass-config -v storage://onprem-poc/artemyushkovskiy/startup_package_test/mlruns/0/bd26789fb5c6441f8a31f4a8da596853/artifacts/model/data/model.h5:/storage:rw -e NEURO_CLUSTER=neuro-compute neuromation/neuro-extras:20.12.16 neuro cp --progress -r -u -T storage://neuro-compute/yevheniisemendiak/startup_package_test/mlruns/0/bd26789fb5c6441f8a31f4a8da596853/artifacts/model/data/model.h5 /storage'
Temporary config file created on storage: storage://onprem-poc/artemyushkovskiy/.neuro/99821d56-819b-4660-9d49-7a3d1ac42f60-cfg.
Inside container it will be available at: /var/storage/.neuro/99821d56-819b-4660-9d49-7a3d1ac42f60-cfg.
√ Job ID: job-bde18bc3-9df2-4c8c-beed-780f075aa8d1
- Status: pending Creating
- Status: pending Scheduling
√ Http URL: https://job-bde18bc3-9df2-4c8c-beed-780f075aa8d1.jobs.onprem-poc.org.neu.ro
√ The job will die in a day. See --life-span option documentation for details.
√ Status: running                        
√ =========== Job is running in terminal mode ===========
√ (If you don't see a command prompt, try pressing enter)
√ (Use Ctrl-P Ctrl-Q key sequence to detach from the job)
[09:14:49] Copying storage://neuro-compute/yevheniisemendiak/startup_package_test/mlruns/0/bd26789fb5c6441f8a31f4a8da596853/artifacts/model/data/model.h5 => /storage                                              
[09:14:50] Copying: storage://neuro-compute/yevheniisemendiak/startup_package_test/mlruns/0/bd26789fb5c6441f8a31f4a8da596853/artifacts/model/data/model.h5                                                         
model.h5 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━   0% 0.0/77.1 MB ?
ERROR: cannot copy storage://neuro-compute/yevheniisemendiak/startup_package_test/mlruns/0/bd26789fb5c6441f8a31f4a8da596853/artifacts/model/data/model.h5 to file:///storage: [Errno 21] Is a directory: '/storage'

Working:

neuro-extras data transfer storage://neuro-compute/yevheniisemendiak/startup_package_test/mlruns/0/bd26789fb5c6441f8a31f4a8da596853/artifacts/model storage://onprem-poc/artemyushkovskiy/startup_package_test/mlruns/0/bd26789fb5c6441f8a31f4a8da596853/artifacts/model