diff --git a/src/commands/clone.rs b/src/commands/clone.rs
index 4ff0768..9c5a6b3 100644
--- a/src/commands/clone.rs
+++ b/src/commands/clone.rs
@@ -10,7 +10,6 @@ use crate::services::api::ApiError;
 use crate::services::list_folders::ListFolders;
 use crate::services::download_files::DownloadFiles;
 use crate::utils::object;
-use crate::utils::path;
 use crate::commands;
 use crate::global::global::{DIR_PATH, set_dir_path};
 
@@ -72,11 +71,15 @@ pub fn clone(remote: Values<'_>) {
         } else {
             // create folder
             let local_folder = get_local_path(folder, local_path.clone(), username, dist_path_str);
-            dbg!(DirBuilder::new().recursive(true).create(local_folder.clone()));
+            if let Err(err) = DirBuilder::new().recursive(true).create(local_folder.clone()) {
+                eprintln!("error: cannot create directory {}: {}", local_folder.display(), err);
+            }
 
             // add tree
             let path_folder = local_folder.strip_prefix(local_path.clone()).unwrap();
-            object::add_tree(&path_folder);
+            if object::add_tree(&path_folder).is_err() {
+                eprintln!("error: cannot store object {}", path_folder.display());
+            }
         }
 
         // find folders and files in response
@@ -114,7 +117,7 @@ fn write_file(path: PathBuf, content: &Vec<u8>, local_p: PathBuf) -> io::Result<
     f.write_all(&content)?;
     
     let relative_p = Path::new(&path).strip_prefix(local_p).unwrap();
-    object::add_blob(relative_p, "tmpdate");
+    object::add_blob(relative_p, "tmpdate")?;
     Ok(())
 }
 
diff --git a/src/commands/config.rs b/src/commands/config.rs
index 2536f75..0b17a12 100644
--- a/src/commands/config.rs
+++ b/src/commands/config.rs
@@ -1,9 +1,9 @@
 use crate::utils::path;
 use crate::utils::read;
 use std::fs::OpenOptions;
-use std::io::Write;
+use std::io::{self, Write};
 
-pub fn set(var: &str, val: &str) {
+pub fn set(var: &str, val: &str) -> io::Result<()> {
     let mut root = match path::nextsync() {
         Some(path) => path,
         None => {
@@ -19,12 +19,13 @@ pub fn set(var: &str, val: &str) {
         .write(true)
         .create(true)
         .append(true)
-        .open(root).unwrap();
+        .open(root)?;
 
     let mut line = var.to_owned();
     line.push_str(" ");
     line.push_str(val);
-    writeln!(file, "{}", line);
+    writeln!(file, "{}", line)?;
+    Ok(())
 }
 
 pub fn get(var: &str) -> Option<String> {
diff --git a/src/commands/status.rs b/src/commands/status.rs
index 5655b31..0bd5979 100644
--- a/src/commands/status.rs
+++ b/src/commands/status.rs
@@ -4,7 +4,6 @@ use crypto::sha1::Sha1;
 use std::collections::HashMap;
 use colored::Colorize;
 use std::path::PathBuf;
-use std::path::Path;
 use std::io::{self, Lines, BufReader};
 use crate::utils::{self, object};
 
@@ -45,9 +44,7 @@ pub fn get_diff() -> (Vec<String>, Vec<String>, Vec<Obj>) {
     dbg!(utils::path::current());
     let nextsync_path = utils::path::nextsync().unwrap();
     let current_p = utils::path::current().unwrap();
-    let mut dist_path = current_p.strip_prefix(root.clone()).unwrap().to_path_buf();
-    dbg!(dist_path.clone());
-
+    let dist_path = current_p.strip_prefix(root.clone()).unwrap().to_path_buf();
     
     if let Ok(lines) = read_head(nextsync_path.clone()) {
         add_to_hashmap(lines, &mut hashes, dist_path.clone());
diff --git a/src/main.rs b/src/main.rs
index aa80cbe..db6822d 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -100,7 +100,9 @@ fn main() {
     } else if let Some(matches) = matches.subcommand_matches("config") {
         if let Some(mut var) = matches.values_of("variable") {
             if let Some(mut val) = matches.values_of("value") {
-                commands::config::set(var.next().unwrap(), val.next().unwrap());
+                if commands::config::set(var.next().unwrap(), val.next().unwrap()).is_err() {
+                    eprintln!("fatal: cannot save the value");
+                }
             }
         }
     }
diff --git a/src/utils/object.rs b/src/utils/object.rs
index c715bca..19bf0e5 100644
--- a/src/utils/object.rs
+++ b/src/utils/object.rs
@@ -132,16 +132,12 @@ fn add_node(path: &Path, node: &str) -> io::Result<()> {
    
     let (dir, rest) = hash_obj(path.clone().to_str().unwrap());
 
-    dbg!(root.clone());
     root.push(dir);
     if !root.exists() {
         todo!();
     }
     root.push(rest);
 
-    dbg!("create node");
-    dbg!(root.clone());
-    dbg!(node.clone());
     let mut file = OpenOptions::new()
         .read(true)
         .write(true)