Add more log messages to get token function

auth/token.go

@@ -50,17 +50,20 @@ type GetTokenParams struct {
 func GetToken(params *GetTokenParams) (*Token, error) {
 	v, err := query.Values(params)
 	if err != nil {
+		slog.Error("failed to encode token", slog.Any("error", err))
 		return nil, err
 	}
 
 	res, err := http.Post(TokenUrl, "application/x-www-form-urlencoded", strings.NewReader(v.Encode()))
 	if err != nil {
+		slog.Error("failed to get token", slog.Any("error", err))
 		return nil, err
 	}
 	defer res.Body.Close()
 
 	body := make([]byte, res.ContentLength)
 	if _, err := res.Body.Read(body); err != nil {
+		slog.Error("failed to read response", slog.Any("error", err))
 		return nil, err
 	}