InvalidConnector messages

[Nicolas Pinault]

Hi,

When pushing to Kallithea (0.3.3), I get the following messages in 
TortoiseHg :

% hg push http://Nicolas:***...
pushing to http://Nicolas:***...
no changes made to subrepo b...
no changes made to subrepo w...
no changes made to subrepo z...
searching for changes
remote: adding changesets
remote: adding manifests
remote: adding file changes
remote: added 2 changesets with 2 changes to 2 files
remote: InvalidConnector: Unsupported version control system "hg": No 
module named mercurial
remote: InvalidConnector: Unsupported version control system "hg": No 
module named mercurial
[command completed successfully Mon Feb 26 11:10:41 2018]

What do the "InvalidConnector" messages mean ?

Nicolas