Hello, I am trying to upgrade Xena to Yoga, as a per-requisite i have upgraded kolla to 14.0.0 and started kolla-build for 14.0.0. *kolla: 14.0.0* *Distributor ID: UbuntuDescription: Ubuntu 20.04.3 LTSRelease: 20.04Codename: focal* *upgrading to : Yoga* *upgrading from: xena* *kolla-build -t source kolla-toolbox -b ubuntu* following is the error message during the image build, issue occurs only on ubuntu whereas centos has no issues, In my environment we use ubuntu. How can this issue be resolved? INFO:kolla.common.utils.kolla-toolbox:ca-certificates is already the newest version (20210119~20.04.2). INFO:kolla.common.utils.kolla-toolbox:Some packages could not be installed. This may mean that you have INFO:kolla.common.utils.kolla-toolbox:requested an impossible situation or if you are using the unstable INFO:kolla.common.utils.kolla-toolbox:distribution that some required packages have not yet been created INFO:kolla.common.utils.kolla-toolbox:or been moved out of Incoming. INFO:kolla.common.utils.kolla-toolbox:The following information may help to resolve the situation: INFO:kolla.common.utils.kolla-toolbox:The following packages have unmet dependencies: INFO:kolla.common.utils.kolla-toolbox: rabbitmq-server : Depends: erlang-base (< 1:25.0) but 1:25.0-1rmq1ppa1~ubuntu20.04.1 is to be installed or INFO:kolla.common.utils.kolla-toolbox: erlang-base-hipe (< 1:25.0) but it is not going to be installed or INFO:kolla.common.utils.kolla-toolbox: esl-erlang (< 1:25.0) but it is not installable INFO:kolla.common.utils.kolla-toolbox: Depends: erlang-crypto (< 1:25.0) but 1:25.0-1rmq1ppa1~ubuntu20.04.1 is to be installed or INFO:kolla.common.utils.kolla-toolbox: esl-erlang (< 1:25.0) but it is not installable INFO:kolla.common.utils.kolla-toolbox: Depends: erlang-eldap (< 1:25.0) but 1:25.0-1rmq1ppa1~ubuntu20.04.1 is to be installed or INFO:kolla.common.utils.kolla-toolbox: esl-erlang (< 1:25.0) but it is not installable INFO:kolla.common.utils.kolla-toolbox: Depends: erlang-inets (< 1:25.0) but 1:25.0-1rmq1ppa1~ubuntu20.04.1 is to be installed or INFO:kolla.common.utils.kolla-toolbox: esl-erlang (< 1:25.0) but it is not installable INFO:kolla.common.utils.kolla-toolbox: Depends: erlang-mnesia (< 1:25.0) but 1:25.0-1rmq1ppa1~ubuntu20.04.1 is to be installed or INFO:kolla.common.utils.kolla-toolbox: esl-erlang (< 1:25.0) but it is not installable INFO:kolla.common.utils.kolla-toolbox: Depends: erlang-os-mon (< 1:25.0) but 1:25.0-1rmq1ppa1~ubuntu20.04.1 is to be installed or INFO:kolla.common.utils.kolla-toolbox: esl-erlang (< 1:25.0) but it is not installable INFO:kolla.common.utils.kolla-toolbox: Depends: erlang-parsetools (< 1:25.0) but 1:25.0-1rmq1ppa1~ubuntu20.04.1 is to be installed or INFO:kolla.common.utils.kolla-toolbox: esl-erlang (< 1:25.0) but it is not installable INFO:kolla.common.utils.kolla-toolbox: Depends: erlang-public-key (< 1:25.0) but 1:25.0-1rmq1ppa1~ubuntu20.04.1 is to be installed or INFO:kolla.common.utils.kolla-toolbox: esl-erlang (< 1:25.0) but it is not installable INFO:kolla.common.utils.kolla-toolbox: Depends: erlang-runtime-tools (< 1:25.0) but 1:25.0-1rmq1ppa1~ubuntu20.04.1 is to be installed or INFO:kolla.common.utils.kolla-toolbox: esl-erlang (< 1:25.0) but it is not installable INFO:kolla.common.utils.kolla-toolbox: Depends: erlang-ssl (< 1:25.0) but 1:25.0-1rmq1ppa1~ubuntu20.04.1 is to be installed or INFO:kolla.common.utils.kolla-toolbox: esl-erlang (< 1:25.0) but it is not installable INFO:kolla.common.utils.kolla-toolbox: Depends: erlang-syntax-tools (< 1:25.0) but 1:25.0-1rmq1ppa1~ubuntu20.04.1 is to be installed or INFO:kolla.common.utils.kolla-toolbox: esl-erlang (< 1:25.0) but it is not installable INFO:kolla.common.utils.kolla-toolbox: Depends: erlang-tools (< 1:25.0) but 1:25.0-1rmq1ppa1~ubuntu20.04.1 is to be installed or INFO:kolla.common.utils.kolla-toolbox: esl-erlang (< 1:25.0) but it is not installable INFO:kolla.common.utils.kolla-toolbox: Depends: erlang-xmerl (< 1:25.0) but 1:25.0-1rmq1ppa1~ubuntu20.04.1 is to be installed or INFO:kolla.common.utils.kolla-toolbox: esl-erlang (< 1:25.0) but it is not installable INFO:kolla.common.utils.kolla-toolbox:E: Unable to correct problems, you have held broken packages. INFO:kolla.common.utils.kolla-toolbox: INFO:kolla.common.utils.kolla-toolbox:Removing intermediate container 7ea161d0dbbd ERROR:kolla.common.utils.kolla-toolbox:Error'd with the following message ERROR:kolla.common.utils.kolla-toolbox:The command '/bin/sh -c apt-get update && apt-get -y install --no-install-recommends build-essential ca-certificates crudini gdisk git jq libffi-dev libssl-dev libxslt1-dev openvswitch-switch python3-dev rabbitmq-server && apt-get clean && rm -rf /var/lib/apt/lists/*' returned a non-zero code: 100 INFO:kolla.common.utils:========================= INFO:kolla.common.utils:Successfully built images INFO:kolla.common.utils:========================= INFO:kolla.common.utils:base INFO:kolla.common.utils:=========================== INFO:kolla.common.utils:Images that failed to build INFO:kolla.common.utils:=========================== ERROR:kolla.common.utils:kolla-toolbox Failed with status: error INFO:kolla.common.utils:========================================= Thanks Vish