[BUGFIX] Fix exception if no teaser image was set

Resources/Private/Partials/Teaser.html

@@ -21,7 +21,9 @@
 
 <f:alias map="{singleViewUri: '{f:uri.page(pageUid: \'{newsMetaData.news.uid}\')}'}">
 	<a href="{singleViewUri}">
-		<div class="tx-sgnews-teaser-image tx-sgnews-teaser-image-stretched" style="background-image: url({f:uri.image(image: '{newsMetaData.teaserImageObject}')});"></div>
+		<f:if condition="{newsMetaData.teaserImageObject}">
+			<div class="tx-sgnews-teaser-image tx-sgnews-teaser-image-stretched" style="background-image: url({f:uri.image(image: '{newsMetaData.teaserImageObject}')});"></div>
+		</f:if>
 		<div class="tx-sgnews-teaser-inner">
 			<div class="tx-sgnews-teaser-title">
 				{headerTag -> f:format.raw()}

Resources/Private/Templates/SingleView/SingleView.html

@@ -98,6 +98,7 @@
 					</f:if>
 				</div>
 			</div>
+		</div>
 	</section>
 
 	<section class="content dark-bg">
@@ -136,6 +137,5 @@
 				</div>
 			</div>
 		</div>
-		</div>
 	</section>
 </f:section>