From: Unknown User From: Yusei Tahara I think it was a network problem. If you try again, it should work. I think it's related to https://github.com/Nexedi/erp5/commit/ b5b16628d0753647b87b4b7ff6c72eb32c3b224f# diff-8903239df476d7401cf9e76af0252622 . You remove submodule "doc-bt5", but installer don't know about it. Additional info: /opt/slapos/log/slapos-node-software.log [2019-12-21 14:55:43,797] INFO Warning: "branch" parameter with value "master" is ignored. Checking out to revision 80994259537cc30d255d9230aabaf47dce621bf8. So, it clone https://lab.nexedi.com/nexedi/erp5/tree/ 80994259537cc30d255d9230aabaf47dce621bf8 revision , not master.