Call to a member function getTag() on null (500 Whoops, looks like something went wrong.)

in /hp/bq/ac/ci/www/libraries/src/WebAsset/AssetItem/LangActiveAssetItem.php (line 48)

array $dependencies = []
) {
parent::__construct($name, $uri, $options, $attributes, $dependencies);
// Prepare Uri depend from the active language
$langTag = Factory::getApplication()->getLanguage()->getTag();
$client = $this->getOption('client');
// Create Uri <client>/language/<langTag>/<langTag>.css
if ($client) {
$this->uri = $client . '/language/' . $langTag . '/' . $langTag . '.css';

LangActiveAssetItem->__construct('template.active.language', '', array('description' => 'An asset to allow language specific css, eg \'language/[lang-CODE]/[lang-CODE].css\', to use it as a dependency to the active template', 'type' => 'style', 'class' => 'LangActiveAssetItem', 'dependencies' => array('template.active'), 'assetSource' => array('registryFile' => 'templates/cassiopeia/joomla.asset.json')), array(), array()) in /hp/bq/ac/ci/www/libraries/src/WebAsset/WebAssetRegistry.php (line 247)

$className = \array_key_exists('class', $options) ? $options['class'] : null;
if ($className && class_exists($nameSpace . '\\' . $className)) {
$className = $nameSpace . '\\' . $className;
return new $className($name, $uri, $options, $attributes, $dependencies);
}
return new WebAssetItem($name, $uri, $options, $attributes, $dependencies);
}

WebAssetRegistry->createAsset('template.active.language', '', array('description' => 'An asset to allow language specific css, eg \'language/[lang-CODE]/[lang-CODE].css\', to use it as a dependency to the active template', 'type' => 'style', 'class' => 'LangActiveAssetItem', 'dependencies' => array('template.active'), 'assetSource' => array('registryFile' => 'templates/cassiopeia/joomla.asset.json'))) in /hp/bq/ac/ci/www/libraries/src/WebAsset/WebAssetRegistry.php (line 419)

// Inheriting the Namespace
if ($namespace && !\array_key_exists('namespace', $options)) {
$options['namespace'] = $namespace;
}
$assetItem = $this->createAsset($name, $uri, $options);
$this->add($item['type'], $assetItem);
}
}
/**

WebAssetRegistry->parseRegistryFile('templates/cassiopeia/joomla.asset.json') in /hp/bq/ac/ci/www/libraries/src/WebAsset/WebAssetRegistry.php (line 351)

$this->dataFilesNew = [];
foreach ($paths as $path) {
// Parse only if the file was not parsed already
if (empty($this->dataFilesParsed[$path])) {
$this->parseRegistryFile($path);
// Mark the file as parsed
$this->dataFilesParsed[$path] = $path;
}
}

WebAssetRegistry->parseRegistryFiles() in /hp/bq/ac/ci/www/libraries/src/WebAsset/WebAssetRegistry.php (line 159)

if (!array_key_exists($type, $this->assets)) {
$this->assets[$type] = [];
}
// Check if any new file was added
$this->parseRegistryFiles();
$eventChange = 'new';
$eventAsset = $asset;
// Use "old" asset for "Changed" event, a "new" asset can be loaded by a name from the registry

WebAssetRegistry->add('style', object(WebAssetItem)) in /hp/bq/ac/ci/www/libraries/src/WebAsset/WebAssetManager.php (line 508)

if ($asset instanceof WebAssetItemInterface) {
$this->registry->add($type, $asset);
} elseif (is_string($asset)) {
$options['type'] = $type;
$assetInstance = $this->registry->createAsset($asset, $uri, $options, $attributes, $dependencies);
$this->registry->add($type, $assetInstance);
} else {
throw new \InvalidArgumentException(
sprintf(
'%s(): Argument #2 ($asset) must be a string or an instance of %s, %s given.',
__METHOD__,

WebAssetManager->registerAsset('style', 'theme.colors_standard', 'media/templates/site/cassiopeia/css/global/colors_standard.css') in /hp/bq/ac/ci/www/libraries/src/WebAsset/WebAssetManager.php (line 234)

}
if ($andUse) {
$name = $arguments[0] instanceof WebAssetItemInterface ? $arguments[0]->getName() : $arguments[0];
return $this->registerAsset($type, ...$arguments)->useAsset($type, $name);
} else {
return $this->registerAsset($type, ...$arguments);
}
}

WebAssetManager->__call('registerandusestyle', array('theme.colors_standard', 'media/templates/site/cassiopeia/css/global/colors_standard.css')) in /hp/bq/ac/ci/www/templates/cassiopeia/error.php (line 40)

$templatePath = 'media/templates/site/cassiopeia';
// Color Theme
$paramsColorName = $this->params->get('colorName', 'colors_standard');
$assetColorName = 'theme.' . $paramsColorName;
$wa->registerAndUseStyle($assetColorName, $templatePath . '/css/global/' . $paramsColorName . '.css');
// Use a font scheme if set in the template style options
$paramsFontScheme = $this->params->get('useFontScheme', false);
$fontStyles = '';

require('/hp/bq/ac/ci/www/templates/cassiopeia/error.php') in /hp/bq/ac/ci/www/libraries/src/Document/HtmlDocument.php (line 721)

// Store the file path
$this->_file = $directory . '/' . $filename;
// Get the file content
ob_start();
require $directory . '/' . $filename;
$contents = ob_get_contents();
ob_end_clean();
}
return $contents;

HtmlDocument->_loadTemplate('/hp/bq/ac/ci/www/templates/cassiopeia', 'error.php') in /hp/bq/ac/ci/www/libraries/src/Document/HtmlDocument.php (line 776)

$this->baseurl = Uri::base(true);
$this->params = $params['params'] ?? new Registry();
$this->template = $template;
// Load
$this->_template = $this->_loadTemplate($baseDir, $file);
return $this;
}
/**

HtmlDocument->_fetchTemplate(array('template' => 'cassiopeia', 'directory' => '/hp/bq/ac/ci/www/templates', 'debug' => true, 'csp_nonce' => null, 'templateInherits' => '', 'params' => object(Registry), 'file' => 'error.php')) in /hp/bq/ac/ci/www/libraries/src/Document/HtmlDocument.php (line 612)

*
* @since 1.7.0
*/
public function parse($params = [])
{
return $this->_fetchTemplate($params)->_

RuntimeException Error

HTTP 500 Whoops, looks like something went wrong.

Call to a member function getTag() on null

Exceptions 2

Error