diff --git a/src/handlers/proxy.rs b/src/handlers/proxy.rs
index 2cc16e4..074bd6b 100644
--- a/src/handlers/proxy.rs
+++ b/src/handlers/proxy.rs
@@ -103,6 +103,7 @@ pub async fn proxy_handler(
                     };
                 }
                 // not image passing thumb generation
+                warn!("file is not an image");
             }
 
             // we need to download what stored_path keeping in aws
@@ -127,10 +128,14 @@ pub async fn proxy_handler(
 
                     Ok(HttpResponse::Ok().content_type(content_type).body(filedata))
                 }
-                Err(err) => Err(ErrorInternalServerError(err)),
+                Err(err) => {
+                    error!("cannot download {} from aws: {}", stored_path, err);
+                    Err(ErrorInternalServerError(err))
+                },
             };
         }
         Ok(None) => {
+            warn!("download from aws to storj: {}", requested_res);
             // download from aws to storj
             match load_file_from_s3(&state.aws_client, &state.bucket, &requested_res).await {
                 Ok(filedata) => {
@@ -150,10 +155,16 @@ pub async fn proxy_handler(
                     }
                     Ok(HttpResponse::Ok().content_type(content_type).body(filedata))
                 },
-                Err(e) => Err(ErrorInternalServerError(e)),
+                Err(e) => {
+                    error!("cannot download {} from aws: {}", requested_res, e);
+                    Err(ErrorInternalServerError(e))
+                },
             }
         },
-        Err(e) => Err(ErrorInternalServerError(e))
+        Err(e) => {
+            error!("cannot get path from aws: {}", e);
+            Err(ErrorInternalServerError(e))
+        }
     }
 }
 
@@ -179,6 +190,7 @@ async fn thumbdata_save(
             }
         };
 
+        warn!("generate thumbnails for {}", filename);
         //actix::spawn(async move {
             match generate_thumbnails(&img).await {
                 Ok(thumbnails_bytes) => {