pip版本的Devstack安装问题

Question

每次我尝试安装devstack时，都会遇到同样的错误。有人能为这个问题提出一些可能的解决办法吗

 ERROR: Links are not allowed as constraints
 +lib/tempest:install_tempest:1             exit_trap
 +./stack.sh:exit_trap:491                  local r=1
 ++./stack.sh:exit_trap:492                  jobs -p
 +./stack.sh:exit_trap:492                  jobs=
 +./stack.sh:exit_trap:495                  [[ -n '' ]]
 +./stack.sh:exit_trap:501                  '[' -f '' ']'
 +./stack.sh:exit_trap:506                  kill_spinner
 +./stack.sh:kill_spinner:401               '[' '!' -z '' ']'
 +./stack.sh:exit_trap:508                  [[ 1 -ne 0 ]]
 +./stack.sh:exit_trap:509                  echo 'Error on exit'
 Error on exit
 +./stack.sh:exit_trap:511                  type -p generate-subunit
 +./stack.sh:exit_trap:512                  generate-subunit 1610881819 136 fail
 +./stack.sh:exit_trap:514                  [[ -z /opt/stack/logs ]]
 +./stack.sh:exit_trap:517                  /usr/bin/python3.8 /home/saptarsi/devstack/tools           /worlddump.py -d /opt/stack/logs

世界倾销。。。有关详细信息，请参阅/opt/stack/logs/worlddump-2021-01-17-111235.txt +/堆栈。sh：出口\U陷阱：526出口1

Devstack Install Error