Internal error while fetching module list

[sparrow109]

Followed steps to build NED but failed with internal error:

Here is the path for the project I built:

admin@ncs# show netconf-ned-builder project tail-R6274
netconf-ned-builder project tail-R6274 22.1
download-cache-path /root/nso-5.5/ncs-run/state/netconf-ned-builder/cache/tail-R6274-nc-22.1
ned-directory-path /root/nso-5.5/ncs-run/state/netconf-ned-builder/tail-R6274-nc-22.1

Then uploaded the yang files to /root/nso-5.5/ncs-run/state/netconf-ned-builder/cache/tail-R6274-nc-22.1.

But when input fetch-module-list, I got below internal error:

admin@ncs# netconf-ned-builder project tail-R6274 22.1 fetch-module-list
Error: internal error

If the yang files have been uploaded to the cache path, will the device still be connected and get the schema? Please share some clues about why the error was met

Thanks a lot!

[rogaglia]

Internal Errors should be channeled via the TAC for assistance as they represent exceptions.

I would recommend you to re-test with the most recent version in your release train just in case the problem has been solved in newer releases.