add err handling for missing function

album.go

@@ -55,7 +55,10 @@ func (a *album) parseAlbumData(doc *goquery.Document) {
 	}
 
 	var albumMetadataFromPage albumMetadata
-	json.Unmarshal([]byte(pageMetadata), &albumMetadataFromPage)
+	err := json.Unmarshal([]byte(pageMetadata), &albumMetadataFromPage)
+	if err != nil {
+		logger.Errorln(err)
+	}
 
 	albumData := albumMetadataFromPage.Album
 	a.Artist = albumData.Artist.Name
@@ -135,5 +138,9 @@ func albumHandler(w http.ResponseWriter, r *http.Request) {
 
 	render("album", w, a)
 
-	setCache(id, a)
+	err = setCache(id, a)
+	if err != nil {
+		logger.Errorln(err)
+	}
+
 }

annotations.go

@@ -110,7 +110,11 @@ func annotationsHandler(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	setCache(id, body)
+	err = setCache(id, body)
+	if err != nil {
+		logger.Errorln(err)
+	}
+
 	_, err = w.Write(response)
 	if err != nil {
 		logger.Errorln("Error sending response: ", err)

lyrics.go

@@ -168,5 +168,9 @@ func lyricsHandler(w http.ResponseWriter, r *http.Request) {
 	s.parse(doc)
 
 	render("lyrics", w, s)
-	setCache(id, s)
+	err = setCache(id, s)
+	if err != nil {
+		logger.Errorln(err)
+	}
+
 }

proxy.go

@@ -69,5 +69,9 @@ func proxyHandler(w http.ResponseWriter, r *http.Request) {
 	}
 
 	w.Header().Add("Content-type", fmt.Sprintf("image/%s", ext))
-	io.Copy(w, res.Body)
+	_, err = io.Copy(w, res.Body)
+	if err != nil {
+		logger.Errorln(err)
+	}
+
 }

search.go

@@ -53,7 +53,10 @@ func searchHandler(w http.ResponseWriter, r *http.Request) {
 	var data response
 
 	d := json.NewDecoder(res.Body)
-	d.Decode(&data)
+	err = d.Decode(&data)
+	if err != nil {
+		logger.Errorln(err)
+	}
 
 	vars := renderVars{query, data.Response.Sections}
 

utils.go

@@ -42,7 +42,11 @@ func getCache(key string) (interface{}, error) {
 
 func write(w http.ResponseWriter, status int, data []byte) {
 	w.WriteHeader(status)
-	w.Write(data)
+	_, err := w.Write(data)
+	if err != nil {
+		logger.Errorln(err)
+	}
+
 }
 
 func securityHeaders(next http.Handler) http.Handler {
@@ -105,7 +109,6 @@ func sendRequest(u string) (*http.Response, error) {
 		return nil, err
 	}
 
-
 	req := &http.Request{
 		Method: http.MethodGet,
 		URL:    url,