Fixing wrong error number returned on bad API call.

Signed-off-by: stephb9959 <stephane.bourque@gmail.com>

src/RESTAPI/RESTAPI_board_devices_handler.cpp

@@ -8,8 +8,13 @@
 
 namespace OpenWifi {
     void RESTAPI_board_devices_handler::DoGet() {
+
         auto id = GetBinding("id","");
 
+        if(id.empty()) {
+            return BadRequest(RESTAPI::Errors::MissingUUID);
+        }
+
         AnalyticsObjects::BoardInfo BI;
         if(!StorageService()->BoardsDB().GetRecord("id",id,BI)) {
             return NotFound();