Exception with h:uri.action viewhelper and missing contentObject

gistfile1.txt

Uncaught TYPO3 Exception
#1416846201: Context record must be of type string "NULL" given. (More information)
Helhum\TyposcriptRendering\Configuration\ConfigurationBuildingException thrown in file
.../web/typo3conf/ext/typoscript_rendering/Classes/Configuration/RecordRenderingConfigurationBuilder.php in line 66.
86 Helhum\TyposcriptRendering\Configuration\RecordRenderingConfigurationBuilder::resolveTableNameAndUidFromContextString(NULL)
.../web/typo3conf/ext/typoscript_rendering/Classes/Configuration/RecordRenderingConfigurationBuilder.php:
00042:     public function configurationFor($extensionName, $pluginName, $contextRecord = 'currentPage')
00043:     {
00044:         list($tableName, $uid) = $this->resolveTableNameAndUidFromContextString($contextRecord);
00045:         $pluginSignature = $this->buildPluginSignature($extensionName, $pluginName);
00046:         $renderingPath = $this->resolveRenderingPath($pluginSignature);
85 Helhum\TyposcriptRendering\Configuration\RecordRenderingConfigurationBuilder::configurationFor("ExtensionName", "PluginName", NULL)
.../web/typo3conf/ext/typoscript_rendering/Classes/ViewHelpers/Uri/AjaxActionViewHelper.php:
00106:     {
00107:         $configurationBuilder = new RecordRenderingConfigurationBuilder(new RenderingContext($GLOBALS['TSFE']));
00108:         return $configurationBuilder->configurationFor($extensionName, $pluginName, $contextRecord);
00109:     }
00110: }
84 Helhum\TyposcriptRendering\ViewHelpers\Uri\AjaxActionViewHelper::buildTypoScriptRenderingConfiguration("ExtensionName", "PluginName", NULL)
.../web/typo3conf/ext/typoscript_rendering/Classes/ViewHelpers/Uri/AjaxActionViewHelper.php:
00076:             }
00077:         }
00078:         $renderingConfiguration = $this->buildTypoScriptRenderingConfiguration($extensionName, $pluginName, $contextRecord);
00079:         $additionalParams['tx_typoscriptrendering']['context'] = json_encode($renderingConfiguration);
00080: 
83 Helhum\TyposcriptRendering\ViewHelpers\Uri\AjaxActionViewHelper::render("keyword", array, "Produkt", "ExtensionName", "PluginName", NULL, "", "", boolean, array, boolean, boolean, array, NULL, NULL)
82 call_user_func_array(array, array)
.../vendor/typo3/cms/typo3/sysext/fluid/Classes/Core/ViewHelper/AbstractViewHelper.php:
00266: 
00267:         try {
00268:             return call_user_func_array([$this, 'render'], $renderMethodParameters);
00269:         } catch (Exception $exception) {
00270:             if (GeneralUtility::getApplicationContext()->isProduction()) {