Throw error if fetching anime list did not returned 200 status cdoe

cache.go

@@ -58,13 +58,18 @@ func saveCredentials(credentials string) {
 }
 
 //Loads Client statistic data and returns Client's AnimeList
-func loadData(c *mal.Client, ctx *cli.Context) mal.AnimeList {
+func loadData(c *mal.Client, ctx *cli.Context) (mal.AnimeList, error) {
 	var list []*mal.Anime
 
 	if ctx.GlobalBool("refresh") || cacheNotExist() {
-		mal.DoFuncWithWaitAnimation("Fetching your list", func() {
-			list = c.AnimeList(mal.All)
-		})
+		{
+			var err error
+			mal.DoFuncWithWaitAnimation("Fetching your list", func() {
+				list, err = c.AnimeList(mal.All)
+			})
+			return nil, fmt.Errorf("error fetching your list\n%v", err)
+		}
+
 		cacheList(list)
 		cacheClient(c)
 
@@ -75,7 +80,7 @@ func loadData(c *mal.Client, ctx *cli.Context) mal.AnimeList {
 		list = loadCachedList()
 		loadCachedStats(c)
 	}
-	return list
+	return list, nil
 }
 
 func cacheNotExist() bool {

main.go

@@ -281,9 +281,9 @@ func loadMAL(ctx *cli.Context) (*mal.Client, mal.AnimeList, error) {
 		return nil, nil, fmt.Errorf("error creating mal.Client")
 	}
 
-	list := loadData(c, ctx)
+	list, err := loadData(c, ctx)
 
-	return c, list, nil
+	return c, list, err
 }
 
 func defaultAction(ctx *cli.Context) error {

mal/mal.go

@@ -12,8 +12,8 @@ import (
 	"net/http"
 	"net/url"
 	"strings"
-	"text/template"
 	"sync"
+	"text/template"
 )
 
 const (
@@ -89,18 +89,19 @@ func newRequest(url, credentials, method string) *http.Request {
 
 //Note: Since anime list endpoint, besides anime list, returns account stats, this method also
 //updates Client with them
-func (c *Client) AnimeList(status MyStatus) []*Anime {
+func (c *Client) AnimeList(status MyStatus) ([]*Anime, error) {
 	url := fmt.Sprintf(UserAnimeListEndpoint, c.Username, "all") //Anything other than `all` doesn't really work
 
 	req, err := http.NewRequest(http.MethodGet, url, nil)
 	if err != nil {
-		fmt.Printf("Request error: %v", err)
-		return nil
+		return nil, err
 	}
 
 	resp, err := http.DefaultClient.Do(req)
 	if err != nil {
-		log.Printf("List list getting error: %v", err)
+		return nil, err
+	} else if resp.StatusCode != 200 {
+		return nil, fmt.Errorf("server returned: %v", resp.Status)
 	}
 
 	decoder := xml.NewDecoder(resp.Body)
@@ -123,7 +124,7 @@ func (c *Client) AnimeList(status MyStatus) []*Anime {
 		}
 	}
 
-	return list
+	return list, nil
 }
 
 func (c *Client) Update(entry *Anime) bool {