Nextcloud users section empty

After finally achieving nextcloud version 18.0.7 (as provided by the stable branch - with some troubles because v16 didn’t want to ‘go away’),
I got a very good looking nextcloud instance.

However, if I go to the ‘Users’ tab to make a few user accounts, I only get a blank/empty page.

Has anyone a clue what could be happening? The error you see in the screenshot is the only error I found at the clientside (browser), at the serverside (on my Mox, version 5.1.2) I found the logs.

nextcloud.log at server side (only the line about url:"<restapi>/settings/users")
{
   "app" : "no app in context",
   "level" : 3,
   "message" : {
      "Code" : 0,
      "CustomMessage" : "--",
      "Exception" : "Doctrine\\DBAL\\Exception\\InvalidFieldNameException",
      "File" : "/srv/www/nextcloud/3rdparty/doctrine/dbal/lib/Doctrine/DBAL/Driver/AbstractMySQLDriver.php",
      "Line" : 60,
      "Message" : "An exception occurred while executing 'SELECT DISTINCT `class`, `entity`, `events` FROM `oc_flow_operations` WHERE `events` <> ?' with params [\"[]\"]:\n\nSQLSTATE[42S22]: Column not found: 1054 Unknown column 'entity' in 'field list'",
      "Previous" : {
         "Code" : "42S22",
         "Exception" : "Doctrine\\DBAL\\Driver\\PDOException",
         "File" : "/srv/www/nextcloud/3rdparty/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOStatement.php",
         "Line" : 119,
         "Message" : "SQLSTATE[42S22]: Column not found: 1054 Unknown column 'entity' in 'field list'",
         "Previous" : {
            "Code" : "42S22",
            "Exception" : "PDOException",
            "File" : "/srv/www/nextcloud/3rdparty/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOStatement.php",
            "Line" : 117,
            "Message" : "SQLSTATE[42S22]: Column not found: 1054 Unknown column 'entity' in 'field list'",
            "Trace" : [
               {
                  "args" : [
                     null
                  ],
                  "class" : "PDOStatement",
                  "file" : "/srv/www/nextcloud/3rdparty/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOStatement.php",
                  "function" : "execute",
                  "line" : 117,
                  "type" : "->"
               },
               {
                  "args" : [],
                  "class" : "Doctrine\\DBAL\\Driver\\PDOStatement",
                  "file" : "/srv/www/nextcloud/3rdparty/doctrine/dbal/lib/Doctrine/DBAL/Connection.php",
                  "function" : "execute",
                  "line" : 903,
                  "type" : "->"
               },
               {
                  "args" : [
                     "SELECT DISTINCT `class`, `entity`, `events` FROM `oc_flow_operations` WHERE `events` <> ?",
                     [
                        "[]"
                     ],
                     [
                        2
                     ],
                     null
                  ],
                  "class" : "Doctrine\\DBAL\\Connection",
                  "file" : "/srv/www/nextcloud/lib/private/DB/Connection.php",
                  "function" : "executeQuery",
                  "line" : 199,
                  "type" : "->"
               },
               {
                  "args" : [
                     "SELECT DISTINCT `class`, `entity`, `events` FROM `oc_flow_operations` WHERE `events` <> :dcValue1",
                     {
                        "dcValue1" : "[]"
                     },
                     {
                        "dcValue1" : 2
                     }
                  ],
                  "class" : "OC\\DB\\Connection",
                  "file" : "/srv/www/nextcloud/3rdparty/doctrine/dbal/lib/Doctrine/DBAL/Query/QueryBuilder.php",
                  "function" : "executeQuery",
                  "line" : 200,
                  "type" : "->"
               },
               {
                  "args" : [],
                  "class" : "Doctrine\\DBAL\\Query\\QueryBuilder",
                  "file" : "/srv/www/nextcloud/lib/private/DB/QueryBuilder/QueryBuilder.php",
                  "function" : "execute",
                  "line" : 215,
                  "type" : "->"
               },
               {
                  "args" : [],
                  "class" : "OC\\DB\\QueryBuilder\\QueryBuilder",
                  "file" : "/srv/www/nextcloud/apps/workflowengine/lib/Manager.php",
                  "function" : "execute",
                  "line" : 155,
                  "type" : "->"
               },
               {
                  "args" : [],
                  "class" : "OCA\\WorkflowEngine\\Manager",
                  "file" : "/srv/www/nextcloud/apps/workflowengine/lib/AppInfo/Application.php",
                  "function" : "getAllConfiguredEvents",
                  "line" : 84,
                  "type" : "->"
               },
               {
                  "args" : [],
                  "class" : "OCA\\WorkflowEngine\\AppInfo\\Application",
                  "file" : "/srv/www/nextcloud/apps/workflowengine/appinfo/app.php",
                  "function" : "registerRuleListeners",
                  "line" : 27,
                  "type" : "->"
               },
               {
                  "args" : [
                     "/srv/www/nextcloud/apps/workflowengine/appinfo/app.php"
                  ],
                  "file" : "/srv/www/nextcloud/lib/private/legacy/app.php",
                  "function" : "require_once",
                  "line" : 266
               },
               {
                  "args" : [
                     "workflowengine"
                  ],
                  "class" : "OC_App",
                  "file" : "/srv/www/nextcloud/lib/private/legacy/app.php",
                  "function" : "requireAppFile",
                  "line" : 155,
                  "type" : "::"
               },
               {
                  "args" : [
                     "workflowengine"
                  ],
                  "class" : "OC_App",
                  "file" : "/srv/www/nextcloud/lib/private/legacy/app.php",
                  "function" : "loadApp",
                  "line" : 128,
                  "type" : "::"
               },
               {
                  "args" : [],
                  "class" : "OC_App",
                  "file" : "/srv/www/nextcloud/lib/base.php",
                  "function" : "loadApps",
                  "line" : 993,
                  "type" : "::"
               },
               {
                  "args" : [],
                  "class" : "OC",
                  "file" : "/srv/www/nextcloud/index.php",
                  "function" : "handleRequest",
                  "line" : 38,
                  "type" : "::"
               }
            ]
         },
         "Trace" : [
            {
               "args" : [],
               "class" : "Doctrine\\DBAL\\Driver\\PDOStatement",
               "file" : "/srv/www/nextcloud/3rdparty/doctrine/dbal/lib/Doctrine/DBAL/Connection.php",
               "function" : "execute",
               "line" : 903,
               "type" : "->"
            },
            {
               "args" : [
                  "SELECT DISTINCT `class`, `entity`, `events` FROM `oc_flow_operations` WHERE `events` <> ?",
                  [
                     "[]"
                  ],
                  [
                     2
                  ],
                  null
               ],
               "class" : "Doctrine\\DBAL\\Connection",
               "file" : "/srv/www/nextcloud/lib/private/DB/Connection.php",
               "function" : "executeQuery",
               "line" : 199,
               "type" : "->"
            },
            {
               "args" : [
                  "SELECT DISTINCT `class`, `entity`, `events` FROM `oc_flow_operations` WHERE `events` <> :dcValue1",
                  {
                     "dcValue1" : "[]"
                  },
                  {
                     "dcValue1" : 2
                  }
               ],
               "class" : "OC\\DB\\Connection",
               "file" : "/srv/www/nextcloud/3rdparty/doctrine/dbal/lib/Doctrine/DBAL/Query/QueryBuilder.php",
               "function" : "executeQuery",
               "line" : 200,
               "type" : "->"
            },
            {
               "args" : [],
               "class" : "Doctrine\\DBAL\\Query\\QueryBuilder",
               "file" : "/srv/www/nextcloud/lib/private/DB/QueryBuilder/QueryBuilder.php",
               "function" : "execute",
               "line" : 215,
               "type" : "->"
            },
            {
               "args" : [],
               "class" : "OC\\DB\\QueryBuilder\\QueryBuilder",
               "file" : "/srv/www/nextcloud/apps/workflowengine/lib/Manager.php",
               "function" : "execute",
               "line" : 155,
               "type" : "->"
            },
            {
               "args" : [],
               "class" : "OCA\\WorkflowEngine\\Manager",
               "file" : "/srv/www/nextcloud/apps/workflowengine/lib/AppInfo/Application.php",
               "function" : "getAllConfiguredEvents",
               "line" : 84,
               "type" : "->"
            },
            {
               "args" : [],
               "class" : "OCA\\WorkflowEngine\\AppInfo\\Application",
               "file" : "/srv/www/nextcloud/apps/workflowengine/appinfo/app.php",
               "function" : "registerRuleListeners",
               "line" : 27,
               "type" : "->"
            },
            {
               "args" : [
                  "/srv/www/nextcloud/apps/workflowengine/appinfo/app.php"
               ],
               "file" : "/srv/www/nextcloud/lib/private/legacy/app.php",
               "function" : "require_once",
               "line" : 266
            },
            {
               "args" : [
                  "workflowengine"
               ],
               "class" : "OC_App",
               "file" : "/srv/www/nextcloud/lib/private/legacy/app.php",
               "function" : "requireAppFile",
               "line" : 155,
               "type" : "::"
            },
            {
               "args" : [
                  "workflowengine"
               ],
               "class" : "OC_App",
               "file" : "/srv/www/nextcloud/lib/private/legacy/app.php",
               "function" : "loadApp",
               "line" : 128,
               "type" : "::"
            },
            {
               "args" : [],
               "class" : "OC_App",
               "file" : "/srv/www/nextcloud/lib/base.php",
               "function" : "loadApps",
               "line" : 993,
               "type" : "::"
            },
            {
               "args" : [],
               "class" : "OC",
               "file" : "/srv/www/nextcloud/index.php",
               "function" : "handleRequest",
               "line" : 38,
               "type" : "::"
            }
         ]
      },
      "Trace" : [
         {
            "args" : [
               "An exception occurred while executing 'SELECT DISTINCT `class`, `entity`, `events` FROM `oc_flow_operations` WHERE `events` <> ?' with params [\"[]\"]:\n\nSQLSTATE[42S22]: Column not found: 1054 Unknown column 'entity' in 'field list'",
               {
                  "__class__" : "Doctrine\\DBAL\\Driver\\PDOException",
                  "errorInfo" : [
                     "42S22",
                     1054,
                     "Unknown column 'entity' in 'field list'"
                  ]
               }
            ],
            "class" : "Doctrine\\DBAL\\Driver\\AbstractMySQLDriver",
            "file" : "/srv/www/nextcloud/3rdparty/doctrine/dbal/lib/Doctrine/DBAL/DBALException.php",
            "function" : "convertException",
            "line" : 169,
            "type" : "->"
         },
         {
            "args" : [
               {
                  "__class__" : "Doctrine\\DBAL\\Driver\\PDOMySql\\Driver"
               },
               {
                  "__class__" : "Doctrine\\DBAL\\Driver\\PDOException",
                  "errorInfo" : [
                     "42S22",
                     1054,
                     "Unknown column 'entity' in 'field list'"
                  ]
               },
               "An exception occurred while executing 'SELECT DISTINCT `class`, `entity`, `events` FROM `oc_flow_operations` WHERE `events` <> ?' with params [\"[]\"]:\n\nSQLSTATE[42S22]: Column not found: 1054 Unknown column 'entity' in 'field list'"
            ],
            "class" : "Doctrine\\DBAL\\DBALException",
            "file" : "/srv/www/nextcloud/3rdparty/doctrine/dbal/lib/Doctrine/DBAL/DBALException.php",
            "function" : "wrapException",
            "line" : 145,
            "type" : "::"
         },
         {
            "args" : [
               {
                  "__class__" : "Doctrine\\DBAL\\Driver\\PDOMySql\\Driver"
               },
               {
                  "__class__" : "Doctrine\\DBAL\\Driver\\PDOException",
                  "errorInfo" : [
                     "42S22",
                     1054,
                     "Unknown column 'entity' in 'field list'"
                  ]
               },
               "SELECT DISTINCT `class`, `entity`, `events` FROM `oc_flow_operations` WHERE `events` <> ?",
               {
                  "1" : "[]"
               }
            ],
            "class" : "Doctrine\\DBAL\\DBALException",
            "file" : "/srv/www/nextcloud/3rdparty/doctrine/dbal/lib/Doctrine/DBAL/Connection.php",
            "function" : "driverExceptionDuringQuery",
            "line" : 911,
            "type" : "::"
         },
         {
            "args" : [
               "SELECT DISTINCT `class`, `entity`, `events` FROM `oc_flow_operations` WHERE `events` <> ?",
               [
                  "[]"
               ],
               [
                  2
               ],
               null
            ],
            "class" : "Doctrine\\DBAL\\Connection",
            "file" : "/srv/www/nextcloud/lib/private/DB/Connection.php",
            "function" : "executeQuery",
            "line" : 199,
            "type" : "->"
         },
         {
            "args" : [
               "SELECT DISTINCT `class`, `entity`, `events` FROM `oc_flow_operations` WHERE `events` <> :dcValue1",
               {
                  "dcValue1" : "[]"
               },
               {
                  "dcValue1" : 2
               }
            ],
            "class" : "OC\\DB\\Connection",
            "file" : "/srv/www/nextcloud/3rdparty/doctrine/dbal/lib/Doctrine/DBAL/Query/QueryBuilder.php",
            "function" : "executeQuery",
            "line" : 200,
            "type" : "->"
         },
         {
            "args" : [],
            "class" : "Doctrine\\DBAL\\Query\\QueryBuilder",
            "file" : "/srv/www/nextcloud/lib/private/DB/QueryBuilder/QueryBuilder.php",
            "function" : "execute",
            "line" : 215,
            "type" : "->"
         },
         {
            "args" : [],
            "class" : "OC\\DB\\QueryBuilder\\QueryBuilder",
            "file" : "/srv/www/nextcloud/apps/workflowengine/lib/Manager.php",
            "function" : "execute",
            "line" : 155,
            "type" : "->"
         },
         {
            "args" : [],
            "class" : "OCA\\WorkflowEngine\\Manager",
            "file" : "/srv/www/nextcloud/apps/workflowengine/lib/AppInfo/Application.php",
            "function" : "getAllConfiguredEvents",
            "line" : 84,
            "type" : "->"
         },
         {
            "args" : [],
            "class" : "OCA\\WorkflowEngine\\AppInfo\\Application",
            "file" : "/srv/www/nextcloud/apps/workflowengine/appinfo/app.php",
            "function" : "registerRuleListeners",
            "line" : 27,
            "type" : "->"
         },
         {
            "args" : [
               "/srv/www/nextcloud/apps/workflowengine/appinfo/app.php"
            ],
            "file" : "/srv/www/nextcloud/lib/private/legacy/app.php",
            "function" : "require_once",
            "line" : 266
         },
         {
            "args" : [
               "workflowengine"
            ],
            "class" : "OC_App",
            "file" : "/srv/www/nextcloud/lib/private/legacy/app.php",
            "function" : "requireAppFile",
            "line" : 155,
            "type" : "::"
         },
         {
            "args" : [
               "workflowengine"
            ],
            "class" : "OC_App",
            "file" : "/srv/www/nextcloud/lib/private/legacy/app.php",
            "function" : "loadApp",
            "line" : 128,
            "type" : "::"
         },
         {
            "args" : [],
            "class" : "OC_App",
            "file" : "/srv/www/nextcloud/lib/base.php",
            "function" : "loadApps",
            "line" : 993,
            "type" : "::"
         },
         {
            "args" : [],
            "class" : "OC",
            "file" : "/srv/www/nextcloud/index.php",
            "function" : "handleRequest",
            "line" : 38,
            "type" : "::"
         }
      ]
   },
   "method" : "GET",
   "remoteAddr" : "192.168.141.173",
   "reqId" : "WSZgDrudtEqzfufSOYq6",
   "time" : "2020-11-05T16:52:02+00:00",
   "url" : "/nextcloud/index.php/settings/users",
   "user" : "admin",
   "userAgent" : "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:82.0) Gecko/20100101 Firefox/82.0",
   "version" : "18.0.7.1"
}
clientside (browser)
Error: Loading chunk 6 failed. (missing: https://turris.local/nextcloud/apps/settings/js/vue-6.js)

Webpack 24

[vue-router.esm.js:1897](webpack:///node_modules/vue-router/dist/vue-router.esm.js)

i vue-router.esm.js:1897

l vue-router.esm.js:1939

p vue-router.esm.js:1760

xt vue-router.esm.js:1825

If no other people know what’s going on, I’ll see if I can get it in the bug tracker…