diff --git a/src/data_provider/history.rs b/src/data_provider/history.rs
index 085c1fe..1671f19 100644
--- a/src/data_provider/history.rs
+++ b/src/data_provider/history.rs
@@ -15,7 +15,7 @@ pub fn get_history_of_set(id: Id) -> Result<Vec<HistoryItem>, NotificationData>
     let head = app_dir.clone().join(format!("set_{}_history.csv", id));
     let mut lines = Vec::new();
 
-    append_lines_if_exists(head, &mut lines);
+    append_lines_if_exists(head, &mut lines)?;
     lines.reverse();
     Ok(parse_history_items(lines))
 }
diff --git a/src/data_provider/settings.rs b/src/data_provider/settings.rs
index dce970d..7336105 100644
--- a/src/data_provider/settings.rs
+++ b/src/data_provider/settings.rs
@@ -1,6 +1,5 @@
-use crate::notification::{MaybeError, NotificationData};
 use crate::notification::NotificationData::{DbLoadError, DbSaveError};
-use iced::futures::StreamExt;
+use crate::notification::{MaybeError, NotificationData};
 use rusqlite::Connection;
 
 pub fn get_setting(key: String, connection: &Connection) -> Option<String> {
diff --git a/src/data_provider/web_api.rs b/src/data_provider/web_api.rs
index 24f3dec..b166775 100644
--- a/src/data_provider/web_api.rs
+++ b/src/data_provider/web_api.rs
@@ -30,7 +30,7 @@ pub async fn send_data(id: String) -> MaybeError {
         .text()
         .await
         .map_err(|_| WebApiUnavailable)?;
-    set_local_version(new_version.parse::<u32>().unwrap_or_default()).await;
+    set_local_version(new_version.parse::<u32>().unwrap_or_default()).await?;
     Ok(())
 }
 
@@ -74,7 +74,7 @@ pub async fn load_data(id: String, temp: bool) -> MaybeError {
         .text()
         .await
         .map_err(|_| WebApiUnavailable)?;
-    set_local_version(version.parse::<u32>().unwrap_or_default()).await;
+    set_local_version(version.parse::<u32>().unwrap_or_default()).await?;
     Ok(())
 }
 
diff --git a/src/navigation.rs b/src/navigation.rs
index 35c4c1b..1b3f223 100644
--- a/src/navigation.rs
+++ b/src/navigation.rs
@@ -178,7 +178,7 @@ impl ScreenState {
         if web > local {
             info!("Web version is newer than local version");
             load_data(string, true).await?;
-            set_local_version(web).await;
+            set_local_version(web).await?;
         } else {
             return Ok(false);
         }
@@ -298,7 +298,7 @@ impl ScreenState {
             return match page {
                 Repetition(page) => page.press(&message),
                 _ => Task::none(),
-            }    
+            }
         }
         Task::none()
     }
diff --git a/src/pages/sync.rs b/src/pages/sync.rs
index 0ef132a..e9f7900 100644
--- a/src/pages/sync.rs
+++ b/src/pages/sync.rs
@@ -139,8 +139,15 @@ impl NavigatedPage<SyncMessage> for SyncState {
             DisableSync => {
                 let mut state = self.state.lock();
                 state.sync_data.key = None;
-                delete_settings("SYNC_KEY".to_string(), &state.connection);
-                delete_settings("AUTO_WEB_FETCH".to_string(), &state.connection);
+                let save_result = || {
+                    delete_settings("SYNC_KEY".to_string(), &state.connection)?;
+                    delete_settings("AUTO_WEB_FETCH".to_string(), &state.connection)?;
+                    Ok::<(), NotificationData>(())
+                };
+
+                if let Err(error) = save_result() {
+                    return push_error_task!(error);
+                }
             }
             SwitchAutoSync => {
                 self.auto_fetch = !self.auto_fetch;