As documents folder path points after each restart to a different folder, saving absolute paths obviously doesn't work. Using now (temporarily) UserDefaults to save bank icons. To encapsulate this added method readContentOfFile().

ui/BankingiOSApp/BankingiOSApp/persistence/CoreDataBankingPersistence.swift

@@ -71,17 +71,24 @@ class CoreDataBankingPersistence: IBankingPersistence, IRemitteeSearcher {
     }
     
     func saveUrlToFile(url: String, file: URL) {
-        let response = UrlSessionWebClient().getData(url)
+        if let remoteUrl = URL.encoded(url) {
+            if let fileData = try? Data(contentsOf: remoteUrl) {
+                do {
+                    try UIImage(data: fileData)?.pngData()?.write(to: file)
+                } catch {
+                    NSLog("Could not save url '\(url)' to file '\(file): \(error)")
+                }
                 
-        if let response = response {
+                // not indented for this kind of data but at least it works
-            do {
+                UserDefaults.standard.set(fileData, forKey: file.absoluteString)
-                try UIImage(data: response)?.pngData()?.write(to: file)
-            } catch {
-                NSLog("Could not save url '\(url)' to file '\(file): \(error)")
             }
         }
     }
     
+    func readContentOfFile(_ filePath: String) -> Data? {
+        return UserDefaults.standard.data(forKey: filePath)
+    }
+    
     
     func deleteAll() {
         do {