diff --git a/src/data_provider/settings.rs b/src/data_provider/settings.rs
index dff727f..ad12034 100644
--- a/src/data_provider/settings.rs
+++ b/src/data_provider/settings.rs
@@ -1,3 +1,5 @@
+use crate::notification::NotificationData;
+use crate::notification::NotificationData::{DbLoadError, DbSaveError};
 use rusqlite::Connection;
 
 pub fn get_setting(key: String, connection: &Connection) -> Option<String> {
@@ -15,13 +17,19 @@ pub fn get_setting(key: String, connection: &Connection) -> Option<String> {
     None
 }
 
-pub fn set_setting(key: String, value: String, connection: &Connection) {
-    let current = get_settings_list(connection);
+pub fn set_setting(
+    key: String,
+    value: String,
+    connection: &Connection,
+) -> Result<(), NotificationData> {
+    let current = get_settings_list(connection)?;
     if current.contains(&key) {
-        update_settings(key, value, connection);
+        update_settings(key, value, connection)?;
     } else {
-        create_settings(key, value, connection);
+        create_settings(key, value, connection)?;
     }
+
+    Ok(())
 }
 
 pub fn delete_settings(key: String, connection: &Connection) {
@@ -30,16 +38,21 @@ pub fn delete_settings(key: String, connection: &Connection) {
         .unwrap();
 }
 
-fn create_settings(key: String, value: String, connection: &Connection) {
+fn create_settings(key: String, value: String, connection: &Connection) -> Result<(), NotificationData>{
     connection
         .execute(
             "INSERT into settings (id, value) VALUES (?1, ?2)",
             (key, value),
         )
-        .unwrap();
+        .map_err(|_| DbSaveError)?;
+    Ok(())
 }
 
-fn update_settings(key: String, value: String, connection: &Connection) {
+fn update_settings(
+    key: String,
+    value: String,
+    connection: &Connection,
+) -> Result<(), NotificationData> {
     connection
         .execute(
             "update settings
@@ -47,11 +60,12 @@ set value = ?2
 where id = ?1",
             (key, value),
         )
-        .unwrap();
+        .map_err(|_| DbSaveError)?;
+    Ok(())
 }
 
-fn get_settings_list(connection: &Connection) -> Vec<String> {
-    let mut stmt = connection.prepare("SELECT id FROM settings").unwrap();
-    let iter = stmt.query_map((), |row| row.get(0)).unwrap();
-    iter.map(|row| row.unwrap()).collect()
+fn get_settings_list(connection: &Connection) -> Result<Vec<String>, NotificationData> {
+    let mut stmt = connection.prepare("SELECT id FROM settings").expect("prepare stmt failed");
+    let iter = stmt.query_map((), |row| row.get(0)).map_err(|_| DbLoadError)?;
+    Ok(iter.map(|row| row.unwrap()).collect())
 }
diff --git a/src/pages/sync.rs b/src/pages/sync.rs
index c48931e..0ef132a 100644
--- a/src/pages/sync.rs
+++ b/src/pages/sync.rs
@@ -1,20 +1,20 @@
+use crate::app::{AppState, fill_state};
 use crate::data_provider::settings::{delete_settings, set_setting};
 use crate::data_provider::web_api::*;
 use crate::navigation::Page::PreviousPage;
 use crate::navigation::{NavigatedPage, Page, RootMessage};
-use crate::styling::*;
+use crate::notification::{NotificationData, NotificationRequest};
 use crate::pages::sync::SyncMessage::*;
+use crate::styling::*;
+use crate::{push_error, push_error_task};
 use iced::widget::button::danger;
 use iced::widget::container::rounded_box;
 use iced::widget::{button, column, container, progress_bar, row, space, text, toggler};
 use iced::{Center, Element, Fill, Font, Length, Task};
+use log::error;
 use parking_lot::Mutex;
 use std::sync::Arc;
 use std::time::Duration;
-use log::error;
-use crate::app::{fill_state, AppState};
-use crate::notification::{NotificationRequest, NotificationData};
-use crate::push_error;
 
 #[derive(Clone)]
 pub enum SyncMessage {
@@ -62,11 +62,9 @@ impl NavigatedPage<SyncMessage> for SyncState {
                     .map(|_val: String| RootMessage::Sync(KeyCopied));
             }
             InitSync => {
-                return Task::perform(first_sync(), |id| {
-                    match id {
-                        Ok(id) => RootMessage::Sync(IdReceived(id)),
-                        Err(err) => push_error!(err)
-                    }
+                return Task::perform(first_sync(), |id| match id {
+                    Ok(id) => RootMessage::Sync(IdReceived(id)),
+                    Err(err) => push_error!(err),
                 });
             }
             GetKey => {
@@ -80,7 +78,9 @@ impl NavigatedPage<SyncMessage> for SyncState {
                 }
                 let mut state = self.state.lock();
                 state.sync_data.key = Some(new_id.clone());
-                set_setting("SYNC_KEY".to_string(), new_id, &state.connection);
+                if let Err(err) = set_setting("SYNC_KEY".to_string(), new_id, &state.connection) {
+                    return push_error_task!(err);
+                }
             }
             Send => {
                 self.prepare_to_db_interaction();
@@ -131,7 +131,9 @@ impl NavigatedPage<SyncMessage> for SyncState {
                 state.decks = updated_state.decks;
                 state.dictionary = updated_state.dictionary;
                 state.word_groups = updated_state.word_groups;
-                return Task::done(RootMessage::PushNotification(NotificationRequest::Info(NotificationData::DataLoaded)))
+                return Task::done(RootMessage::PushNotification(NotificationRequest::Info(
+                    NotificationData::DataLoaded,
+                )));
             }
             Disable => {}
             DisableSync => {
@@ -144,11 +146,13 @@ impl NavigatedPage<SyncMessage> for SyncState {
                 self.auto_fetch = !self.auto_fetch;
                 let mut state = self.state.lock();
                 state.sync_data.auto_web_fetch = self.auto_fetch;
-                set_setting(
+                if let Err(err) = set_setting(
                     "AUTO_WEB_FETCH".to_string(),
                     self.auto_fetch.to_string(),
                     &state.connection,
-                );
+                ) {
+                    return push_error_task!(err);
+                }
             }
         }
         Task::none()
@@ -227,10 +231,10 @@ impl SyncState {
                 ]
             }
         }
-            .spacing(DEFAULT_SPACING)
-            .align_x(Center)
-            .width(Length::Shrink)
-            .into()
+        .spacing(DEFAULT_SPACING)
+        .align_x(Center)
+        .width(Length::Shrink)
+        .into()
     }
 
     /*    fn app_updater(&self) -> Element<'_, SyncMessage> {