Fixed.

source/src/config.cpp

@@ -169,24 +169,36 @@ std::string config::get_template_create_path()
 
 std::string config::get_backups_path()
 {
-    return mConfig["backups_path"];
+    nlohmann::json backups_path = mConfig["backups_path"];
+    if (backups_path.empty())
+        return "";
+    if (backups_path.is_string())
+        return backups_path;
+    warning << "backups_path is not a string: " << backups_path << std::endl;
+    return "";
 }
 
 dropshell::tRegistryEntry::tRegistryEntry(nlohmann::json json)
 {
+    valid = false;
     if (json.is_object() && !json.empty()) {
         for (auto &[key, value] : json.items()) {
-            if (tolower(key) == "name") {
-                name = value;
-            } else if (tolower(key) == "url") {
-                url = value;
-            } else if (tolower(key) == "token") {
-                token = value;
+            if (value.is_string() && !value.empty())
+                switch (switchhash(key.c_str())) {
+                    case switchhash("name"):
+                        name = value;
+                        break;
+                    case switchhash("url"):
+                        url = value;
+                        break;
+                    case switchhash("token"):
+                        token = value;
+                        break;
+                    default:
+                        break;
+                }
             }
-        }
-        valid = true;
-    } else {
-        valid = false;
+        valid = (!url.empty()&&!name.empty()); // token can be empty.
     }
 }