Rudder

After creating a group I get a popup "Error while fetching group properties". Nothing in the console, and there is one of the correctly answered request which looks like the properties:

https://127.0.0.1:8581/rudder/secure/api/groups/c9f337d3-6b42-4405-a237-e0f48c62a826/displayInheritedProperties

{"action":"groupDisplayInheritedProperties","id":"c9f337d3-6b42-4405-a237-e0f48c62a826","result":"success","data":{"groups":[{"groupId":"c9f337d3-6b42-4405-a237-e0f48c62a826","properties":[{"name":"frrfref","value":"gregrz","provider":"inherited","hierarchy":"<p>from <b>Global Parameter</b>:<pre>\"gregrz\"</pre></p>","origval":"gregrz"},{"name":"rudder","value":{"packages":{"installed_cache_expire":60,"updates_cache_expire":240}},"provider":"inherited","hierarchy":"<p>from <b>Global Parameter</b>:<pre>{\n    \"packages\" : {\n        \"installed_cache_expire\" : 60,\n        \"updates_cache_expire\" : 240\n    }\n}\n</pre></p>","origval":{"packages":{"installed_cache_expire":60,"updates_cache_expire":240}}},{"name":"rudder_file_edit_header","value":"### Managed by Rudder, edit with care ###","provider":"inherited","hierarchy":"<p>from <b>Global Parameter</b>:<pre>\"### Managed by Rudder, edit with care ###\"</pre></p>","origval":"### Managed by Rudder, edit with care ###"},{"name":"test","value":"plop"}]}]}}