在 Kubuntu 18.04 上运行 digikam 5.6.0。
我有几张带有地理位置数据的图像。
当我选择这些并编辑地理位置->反向地理编码->打开街道地图->应用反向地理编码
它什么也不做。
终端输出（相关部分）是：
digikam.general: AlbumWatch use QFileSystemWatcher
digikam.geoiface: "setting backend marble"
digikam.geoiface: ----
digikam.geoiface: "ROADMAP"
digikam.geoiface: Loading GPS bookmarks from "/home/user/.local/share/digikam/geobookmarks.xml"
digikam.geoiface: 900 2100 900
digikam.geoiface: "backend marble is ready!"
digikam.geoiface: "marble:900"
digikam.geoiface: 900 2100 900
digikam.geoiface: "created cluster 0: 1 tiles"
digikam.geoiface: "level 5: 1 non empty tiles sorted into 1 clusters (1 searched)"
digikam.geoiface: "created cluster 0: 1 tiles"
digikam.geoiface: "level 5: 1 non empty tiles sorted into 1 clusters (1 searched)"
digikam.geoiface: QVariant(QPersistentModelIndex, QModelIndex(0,0,0x0,Digikam::GPSImageModel(0x55c00e9c85b0))) QSize(58, 32)
digikam.geoiface: QVariant(QPersistentModelIndex, QModelIndex(0,0,0x0,Digikam::GPSImageModel(0x55c00e9c85b0))) QSize(56, 31)
digikam.geoiface: "created cluster 0: 1 tiles"
digikam.geoiface: "level 5: 1 non empty tiles sorted into 1 clusters (1 searched)"
digikam.general: QModelIndex(0,3,0x55c011a92c90,Digikam::GPSImageSortProxyModel(0x55c011a91ca0)) QModelIndex(0,3,0x0,Digikam::GPSImageModel(0x55c00e9c85b0))
digikam.geoiface: 900 2100 900
digikam.geoiface: 900 2100 900
digikam.geoiface: "created cluster 0: 1 tiles"
digikam.geoiface: "level 5: 1 non empty tiles sorted into 1 clusters (1 searched)"
digikam.geoiface: "created cluster 0: 1 tiles"
digikam.geoiface: "level 5: 1 non empty tiles sorted into 1 clusters (1 searched)"
digikam.geoiface: "created cluster 0: 1 tiles"
digikam.geoiface: "level 5: 1 non empty tiles sorted into 1 clusters (1 searched)"
digikam.geoiface: ----
另一方面，如果我选择 Geonames.org 地名（非美国）代替 Open Street Map，它会用非常有限的信息标记图像——国家和地名。
这是怎么回事？如何让反向地理编码正常工作？