The issue was an empty 'urls' definition:
"hooks": { "docviewer": { "apparmor": "docviewer.apparmor", "content-hub": "docviewer-content.json", "desktop": "com.ubuntu.docviewer.desktop", "urls": "" } },
The issue was an empty 'urls' definition:
"hooks": {
"docviewer" : {
" apparmor" : "docviewer. apparmor" ,
" content- hub": "docviewer- content. json",
" desktop" : "com.ubuntu. docviewer. desktop" ,
" urls": ""
}
},