Problem in External/grid_it
If you do git submodule update --init External/grid_it
.
Then I get
Submodule 'External/grid_it' (https://git.code.sf.net/p/gridit/code) registered for path 'External/grid_it'
error: Server does not allow request for unadvertised object 77f7042ea64a4a9b8baa02c5beb0524b1d952170
Fetched in submodule path 'External/grid_it', but it did not contain 77f7042ea64a4a9b8baa02c5beb0524b1d952170. Direct fetching of that commit failed.