Import Dashboard / Widgets Problem Version 1.0.97

[dennishei]

Exported Dashboard / Widgets from Logexplorer Installation A - Version: Version 1.0.97.
Unable to Import to another Logexplorer Installation B with same Version 1.0.97.

widgets.json:
{ "name": "Export dashboard", "date": "2022-07-29 08:51:09", "version": "1.0.97", "widgets": { "1": { "id": 1, "title": "Top IPs", "type": 3, "table": "nginx_access", "column": "ip", "query": "", "order_desc": true, "size": 20 }, "2": { "id": 2, "title": "Top URLs", "type": 3, "table": "nginx_access", "column": "request", "query": "", "order_desc": true, "size": 20 }, "3": { "id": 3, "title": "Methods", "type": 4, "table": "nginx_access", "column": "method", "query": "", "order_desc": true, "size": 20 }, "4": { "id": 4, "title": "Hit Counter Sum", "type": 1, "table": "nginx_access", "column": null, "query": "", "order_desc": true, "size": 5 }, "5": { "id": 5, "title": "Top Useragents", "type": 3, "table": "apache_access", "column": "useragent", "query": "", "order_desc": true, "size": 20 }, "6": { "id": 6, "title": "Host", "type": 4, "table": "apache_access", "column": "vhost", "query": "", "order_desc": true, "size": 20 }, "7": { "id": 7, "title": "Status Codes", "type": 4, "table": "nginx_access", "column": "status", "query": "", "order_desc": true, "size": 20 } }, "dashboards": [] }

Error in apache error log:
{"message":"Uncaught Error: Argument 1 passed to App\\Entity\\Widget::setColumn() must be of the type string, null given, called in /var/opt/repos/logexplorer/src/Services/Export/DashboardExportImportService.php on line 123","context":{"exception":{"class":"TypeError","message":"Argument 1 passed to App\\Entity\\Widget::setColumn() must be of the type string, null given, called in /var/opt/repos/logexplorer/src/Services/Export/DashboardExportImportService.php on line 123","code":0,"file":"/var/opt/repos/logexplorer/src/Entity/Widget.php:211"}},"level":500,"level_name":"CRITICAL","channel":"php","datetime":"2022-07-29T09:01:53.113372+02:00","extra":{}} {"message":"Uncaught PHP Exception TypeError: \"Argument 1 passed to App\\Entity\\Widget::setColumn() must be of the type string, null given, called in /var/opt/repos/logexplorer/src/Services/Export/DashboardExportImportService.php on line 123\" at /var/opt/repos/logexplorer/src/Entity/Widget.php line 211","context":{"exception":{"class":"TypeError","message":"Argument 1 passed to App\\Entity\\Widget::setColumn() must be of the type string, null given, called in /var/opt/repos/logexplorer/src/Services/Export/DashboardExportImportService.php on line 123","code":0,"file":"/var/opt/repos/logexplorer/src/Entity/Widget.php:211"}},"level":500,"level_name":"CRITICAL","channel":"request","datetime":"2022-07-29T09:01:53.113768+02:00","extra":{}} {"message":"Stored the security token in the session.","context":{"key":"_security_main"},"level":100,"level_name":"DEBUG","channel":"security","datetime":"2022-07-29T09:01:53.115678+02:00","extra":{}}