weather GK4 shows old weather

On my both websites http://www.silvarium.cz and http://www.lemsedium.sk (Joomla 2.5) shows module Weather GK4 old weather. This problem is probably from 24.3.2016.

File modules/mod_weather_gk4/cache/mod_weather.bxml has this content:

<?xml version="1.0" encoding="UTF-8" standalone="yes"?><yahoo:error xmlns:yahoo="http://www.yahooapis.com/v1/base.rng" xml:lang="en-US" yahoo:uri="http://yahoo.com"><yahoo:description>Please provide valid credentials. OAuth oauth_problem=&quot;OST_OAUTH_PARAMETER_ABSENT_ERROR&quot;, realm=&quot;yahooapis.com&quot;</yahoo:description><yahoo:detail>Please provide valid credentials. OAuth oauth_problem=&quot;OST_OAUTH_PARAMETER_ABSENT_ERROR&quot;, realm=&quot;yahooapis.com&quot;</yahoo:detail></yahoo:error>

Is problem in Yahoo API?

Here is the problem solution with Yahoo API from previous post :

Workaround for weather modul:
You must edit the "helper.php" at the modul direction ("/modules/mod_weather_gk4/helper.php").
You will find this line entries and change them:

Old Version:
"curl_setopt($curl, CURLOPT_URL, 'http://weather.yahooapis.com/forecastrss?w='.$this->config['WOEID']."&u=".$this->config['tempUnit']);"

New Version:
"curl_setopt($curl, CURLOPT_URL, 'http://xml.weather.yahoo.com/forecastrss?w='.$this->config['WOEID']."&u=".$this->config['tempUnit']);"

Old Version:
"$this->content = file_get_contents('http://weather.yahooapis.com/forecastrss?w='.$this->config['WOEID']."&u=".$this->config['tempUnit']);"

New Version:
"$this->content = file_get_contents('http://xml.weather.yahoo.com/forecastrss?w='.$this->config['WOEID']."&u=".$this->config['tempUnit']);"

Hi

Thank You for this solution. I'm gonna forward it to programmers.