[BUGFIX] TypoScriptAspect does not exist yet in TYPO3 9

Classes/Middleware/ContentReplacerMiddleware.php

@@ -39,6 +39,7 @@ use TYPO3\CMS\Core\Context\TypoScriptAspect;
 use TYPO3\CMS\Core\Http\Stream;
 use TYPO3\CMS\Core\Http\StreamFactory;
 use TYPO3\CMS\Core\Utility\GeneralUtility;
+use TYPO3\CMS\Core\Utility\VersionNumberUtility;
 use TYPO3\CMS\Extbase\Configuration\BackendConfigurationManager;
 use TYPO3\CMS\Frontend\Controller\TypoScriptFrontendController;
 
@@ -195,8 +196,15 @@ class ContentReplacerMiddleware implements MiddlewareInterface {
 			$typoscriptConfiguration = $extbaseFrameworkConfiguration['plugin.']['tx_content_replacer.'];
 		} else {
 			if (empty($GLOBALS['TSFE']->tmpl->setup)) {
-				// we need the TypoScript configuration here, force paring
-				GeneralUtility::makeInstance(Context::class)->setAspect('typoscript', GeneralUtility::makeInstance(TypoScriptAspect::class, true));
+				// we need the TypoScript configuration here, force parsing
+				if (version_compare(VersionNumberUtility::getCurrentTypo3Version(), '10.4.0', '>=')) {
+					GeneralUtility::makeInstance(Context::class)->setAspect(
+						'typoscript',
+						GeneralUtility::makeInstance(TypoScriptAspect::class, TRUE)
+					);
+				} else {
+					$GLOBALS['TSFE']->forceTemplateParsing = TRUE;
+				}
 				$GLOBALS['TSFE']->tmpl->start($GLOBALS['TSFE']->rootLine);
 			}