我在运行 kontact 时遇到了麻烦：
通过以下方式安装：
sudo flatpak install flathub org.kde.kontact
输出：
/usr/bin/flatpak run --branch=stable --arch=x86_64
--command=kontact org.kde.kontact
Trying to create ksycoca...
org.kde.pim.akonadicore: Akonadi Client Session: connection config file 'akonadi/akonadiconnectionrc' can not be found!
org.kde.pim.akonadicore: "QLocalSocket::connectToServer: Ungültiger Name" "/home/benji/.var/app/org.kde.kontact/data/akonadiakonadiserver-cmd.socket"
org.kde.pim.akonadicore: Failed to connect to server!
org.kde.pim.akonadicore: Akonadi Client Session: connection config file 'akonadi/akonadiconnectionrc' can not be found!
org.kde.pim.akonadicore: "QLocalSocket::connectToServer: Ungültiger Name" "/home/benji/.var/app/org.kde.kontact/data/akonadiakonadiserver-cmd.socket"
org.kde.pim.akonadicore: Failed to connect to server!
org.kde.pim.akonadicore: Akonadi Client Session: connection config file 'akonadi/akonadiconnectionrc' can not be found!
org.kde.pim.akonadicore: "QLocalSocket::connectToServer: Ungültiger Name" "/home/benji/.var/app/org.kde.kontact/data/akonadiakonadiserver-ntf.socket"
org.kde.pim.akonadicore: Failed to connect to server!
org.kde.pim.akonadicore: Akonadi Client Session: connection config file 'akonadi/akonadiconnectionrc' can not be found!
org.kde.pim.akonadicore: "QLocalSocket::connectToServer: Ungültiger Name" "/home/benji/.var/app/org.kde.kontact/data/akonadiakonadiserver-ntf.socket"
org.kde.pim.akonadicore: Failed to connect to server!
org.kde.pim.akonadicore: Akonadi Client Session: connection config file 'akonadi/akonadiconnectionrc' can not be found!
org.kde.pim.akonadicore: "QLocalSocket::connectToServer: Ungültiger Name" "/home/benji/.var/app/org.kde.kontact/data/akonadiakonadiserver-ntf.socket"
org.kde.pim.akonadicore: Failed to connect to server!
org.kde.pim.akonadicore: Akonadi Client Session: connection config file 'akonadi/akonadiconnectionrc' can not be found!
org.kde.pim.akonadicore: "QLocalSocket::connectToServer: Ungültiger Name" "/home/benji/.var/app/org.kde.kontact/data/akonadiakonadiserver-ntf.socket"
org.kde.pim.akonadicore: Failed to connect to server!
org.kde.pim.akonadicore: Akonadi Client Session: connection config file 'akonadi/akonadiconnectionrc' can not be found!
org.kde.pim.akonadicore: "QLocalSocket::connectToServer: Ungültiger Name" "/home/benji/.var/app/org.kde.kontact/data/akonadiakonadiserver-cmd.socket"
org.kde.pim.akonadicore: Failed to connect to server!
org.kde.pim.akonadicore: Akonadi Client Session: connection config file 'akonadi/akonadiconnectionrc' can not be found!
org.kde.pim.akonadicore: "QLocalSocket::connectToServer: Ungültiger Name" "/home/benji/.var/app/org.kde.kontact/data/akonadiakonadiserver-ntf.socket"
org.kde.pim.akonadicore: Failed to connect to server!
Cannot initialize model with data QJsonObject(). missing: QJsonValue(string, "urls")
org.kde.pim.akonadicore: Akonadi Client Session: connection config file 'akonadi/akonadiconnectionrc' can not be found!
org.kde.pim.akonadicore: "QLocalSocket::connectToServer: Ungültiger Name" "/home/benji/.var/app/org.kde.kontact/data/akonadiakonadiserver-ntf.socket"
org.kde.pim.akonadicore: Failed to connect to server!
org.kde.pim.akonadicore: Akonadi Client Session: connection config file 'akonadi/akonadiconnectionrc' can not be found!
org.kde.pim.akonadicore: "QLocalSocket::connectToServer: Ungültiger Name" "/home/benji/.var/app/org.kde.kontact/data/akonadiakonadiserver-ntf.socket"
org.kde.pim.akonadicore: Failed to connect to server!
org.kde.pim.akonadicore: Akonadi Client Session: connection config file 'akonadi/akonadiconnectionrc' can not be found!
org.kde.pim.akonadicore: "QLocalSocket::connectToServer: Ungültiger Name" "/home/benji/.var/app/org.kde.kontact/data/akonadiakonadiserver-ntf.socket"
org.kde.pim.akonadicore: Failed to connect to server!
org.kde.pim.akonadicore: Akonadi Client Session: connection config file 'akonadi/akonadiconnectionrc' can not be found!
org.kde.pim.akonadicore: "QLocalSocket::connectToServer: Ungültiger Name" "/home/benji/.var/app/org.kde.kontact/data/akonadiakonadiserver-ntf.socket"
org.kde.pim.akonadicore: Failed to connect to server!
org.kde.pim.akonadicore: Akonadi Client Session: connection config file 'akonadi/akonadiconnectionrc' can not be found!
org.kde.pim.akonadicore: "QLocalSocket::connectToServer: Ungültiger Name" "/home/benji/.var/app/org.kde.kontact/data/akonadiakonadiserver-cmd.socket"
org.kde.pim.akonadicore: Failed to connect to server!
org.kde.pim.akonadicore: Akonadi Client Session: connection config file 'akonadi/akonadiconnectionrc' can not be found!
org.kde.pim.akonadicore: "QLocalSocket::connectToServer: Ungültiger Name" "/home/benji/.var/app/org.kde.kontact/data/akonadiakonadiserver-ntf.socket"
org.kde.pim.akonadicore: Failed to connect to server!
org.kde.pim.akonadicore: Akonadi Client Session: connection config file 'akonadi/akonadiconnectionrc' can not be found!
org.kde.pim.akonadicore: "QLocalSocket::connectToServer: Ungültiger Name" "/home/benji/.var/app/org.kde.kontact/data/akonadiakonadiserver-ntf.socket"
org.kde.pim.akonadicore: Failed to connect to server!
org.kde.pim.akonadicore: Akonadi Client Session: connection config file 'akonadi/akonadiconnectionrc' can not be found!
org.kde.pim.akonadicore: "QLocalSocket::connectToServer: Ungültiger Name" "/home/benji/.var/app/org.kde.kontact/data/akonadiakonadiserver-ntf.socket"
org.kde.pim.akonadicore: Failed to connect to server!
org.kde.pim.akonadicore: Akonadi Client Session: connection config file 'akonadi/akonadiconnectionrc' can not be found!
org.kde.pim.akonadicore: "QLocalSocket::connectToServer: Ungültiger Name" "/home/benji/.var/app/org.kde.kontact/data/akonadiakonadiserver-ntf.socket"
org.kde.pim.akonadicore: Failed to connect to server!
org.kde.pim.akonadicore: Akonadi Client Session: connection config file 'akonadi/akonadiconnectionrc' can not be found!
org.kde.pim.akonadicore: "QLocalSocket::connectToServer: Ungültiger Name" "/home/benji/.var/app/org.kde.kontact/data/akonadiakonadiserver-ntf.socket"
org.kde.pim.akonadicore: Failed to connect to server!
org.kde.pim.akonadicore: Socket error occurred: "QLocalSocket::connectToServer: Ungültiger Name"
org.kde.pim.akonadicore: Socket error occurred: "Failed to connect to server!"
org.kde.pim.akonadicore: Socket error occurred: "QLocalSocket::connectToServer: Ungültiger Name"
org.kde.pim.akonadicore: Socket error occurred: "Failed to connect to server!"
org.kde.pim.akonadicore: Socket error occurred: "QLocalSocket::connectToServer: Ungültiger Name"
org.kde.pim.akonadicore: Socket error occurred: "Failed to connect to server!"
org.kde.pim.akonadicore: Socket error occurred: "QLocalSocket::connectToServer: Ungültiger Name"
org.kde.pim.akonadicore: Socket error occurred: "Failed to connect to server!"
Kontact 正在启动但未连接到我的 dav 日历/联系人（通过 nextcloud 实例）因此看起来好像是第一次运行（有趣的是，在设置中，我的日历/联系人显示出来并告诉我一切已准备就绪并同步）
有什么建议可以解决此问题吗？
Kontact 版本 5.19.3 (21.12.3) 操作系统：Kubuntu 20.04 KDE Plasma 版本：5.18.8 KDE Frameworks 版本：5.68.0 Qt 版本：5.12.8 内核版本：5.4.0-99-generic 操作系统类型：64 位 处理器：8 × Intel® Core™ i7-8565U CPU @ 1.80GHz 内存：15,4 GiB