Cannot download Freetype from alicache

Dear all,
I’m trying to build O2 on a CENTOS 7 PC (it is actually an FLP), but the compilation fails with the following error:

ERROR: GET failed: HTTPSConnectionPool(host='', port=443): Read timed out. (read timeout=15)
WARNING: FreeType (d0bf695b6de166173f92883db9e5f71195328a77) not fetched: have you tried updating the recipes?
**==>** **Building FreeType@v2.10.1**
**==>** FreeType is being built (use --debug for full output): failed
ERROR: Error while executing /home/flp/alice/sw/SPECS/slc7_x86-64/FreeType/v2.10.1-1/ on `'.
ERROR: Log can be found in /home/flp/alice/sw/BUILD/FreeType-latest/log.
ERROR: Please upload it to CERNBox/Dropbox if you intend to request support.
ERROR: Build directory is /home/flp/alice/sw/BUILD/FreeType-latest/FreeType.

It looks like the system cannot get FreeType from alicache since yesterday (while it could get GCC-Toolchain, for example).

Is there any issue with the alicache?
Thanks in advance,
best regards,