diff --git a/connectors/SlideShareConnector/src/main/java/de/l3s/interweb/connector/slideshare/entity/ErrorResponse.java b/connectors/SlideShareConnector/src/main/java/de/l3s/interweb/connector/slideshare/entity/ErrorResponse.java
deleted file mode 100644
index 0257e09a..00000000
--- a/connectors/SlideShareConnector/src/main/java/de/l3s/interweb/connector/slideshare/entity/ErrorResponse.java
+++ /dev/null
@@ -1,20 +0,0 @@
-package de.l3s.interweb.connector.slideshare.entity;
-
-import com.fasterxml.jackson.annotation.JsonProperty;
-import com.fasterxml.jackson.annotation.JsonRootName;
-
-@JsonRootName("SlideShareServiceError")
-public class ErrorResponse {
-
-    @JsonProperty("Message")
-    private ErrorMessage errorMessage;
-
-    public ErrorMessage getErrorMessage() {
-        return errorMessage;
-    }
-
-    public void setErrorMessage(ErrorMessage errorMessage) {
-        this.errorMessage = errorMessage;
-    }
-
-}
diff --git a/connectors/SlideShareConnector/src/main/java/de/l3s/interweb/connector/slideshare/entity/ErrorMessage.java b/connectors/SlideShareConnector/src/main/java/de/l3s/interweb/connector/slideshare/entity/Message.java
similarity index 85%
rename from connectors/SlideShareConnector/src/main/java/de/l3s/interweb/connector/slideshare/entity/ErrorMessage.java
rename to connectors/SlideShareConnector/src/main/java/de/l3s/interweb/connector/slideshare/entity/Message.java
index 3cf903a7..b37f8907 100644
--- a/connectors/SlideShareConnector/src/main/java/de/l3s/interweb/connector/slideshare/entity/ErrorMessage.java
+++ b/connectors/SlideShareConnector/src/main/java/de/l3s/interweb/connector/slideshare/entity/Message.java
@@ -1,11 +1,14 @@
 package de.l3s.interweb.connector.slideshare.entity;
 
+import io.quarkus.runtime.annotations.RegisterForReflection;
+
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonRootName;
 import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlText;
 
+@RegisterForReflection
 @JsonRootName("Message")
-public class ErrorMessage {
+public class Message {
 
     @JsonProperty("ID")
     private int id;
diff --git a/connectors/SlideShareConnector/src/main/java/de/l3s/interweb/connector/slideshare/entity/Meta.java b/connectors/SlideShareConnector/src/main/java/de/l3s/interweb/connector/slideshare/entity/Meta.java
index 4490f16e..02f700d3 100644
--- a/connectors/SlideShareConnector/src/main/java/de/l3s/interweb/connector/slideshare/entity/Meta.java
+++ b/connectors/SlideShareConnector/src/main/java/de/l3s/interweb/connector/slideshare/entity/Meta.java
@@ -1,8 +1,11 @@
 package de.l3s.interweb.connector.slideshare.entity;
 
+import io.quarkus.runtime.annotations.RegisterForReflection;
+
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonRootName;
 
+@RegisterForReflection
 @JsonRootName("Meta")
 public class Meta {
 
diff --git a/connectors/SlideShareConnector/src/main/java/de/l3s/interweb/connector/slideshare/entity/Slideshow.java b/connectors/SlideShareConnector/src/main/java/de/l3s/interweb/connector/slideshare/entity/Slideshow.java
index 60b17183..c62bd704 100644
--- a/connectors/SlideShareConnector/src/main/java/de/l3s/interweb/connector/slideshare/entity/Slideshow.java
+++ b/connectors/SlideShareConnector/src/main/java/de/l3s/interweb/connector/slideshare/entity/Slideshow.java
@@ -1,7 +1,10 @@
 package de.l3s.interweb.connector.slideshare.entity;
 
+import io.quarkus.runtime.annotations.RegisterForReflection;
+
 import com.fasterxml.jackson.annotation.JsonProperty;
 
+@RegisterForReflection
 public class Slideshow {
 
     @JsonProperty("ID")
diff --git a/connectors/SlideShareConnector/src/main/java/de/l3s/interweb/connector/slideshare/entity/Slideshows.java b/connectors/SlideShareConnector/src/main/java/de/l3s/interweb/connector/slideshare/entity/Slideshows.java
index 655f61ae..16f32041 100644
--- a/connectors/SlideShareConnector/src/main/java/de/l3s/interweb/connector/slideshare/entity/Slideshows.java
+++ b/connectors/SlideShareConnector/src/main/java/de/l3s/interweb/connector/slideshare/entity/Slideshows.java
@@ -2,9 +2,12 @@
 
 import java.util.List;
 
+import io.quarkus.runtime.annotations.RegisterForReflection;
+
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlElementWrapper;
 
+@RegisterForReflection
 public class Slideshows {
 
     @JsonProperty("Meta")
@@ -14,7 +17,7 @@ public class Slideshows {
     private List<Slideshow> searchResults;
 
     @JsonProperty("Message")
-    private ErrorMessage errorMessage;
+    private Message errorMessage;
 
     public Meta getMeta() {
         return meta;
@@ -32,11 +35,11 @@ public void setSearchResults(List<Slideshow> searchResults) {
         this.searchResults = searchResults;
     }
 
-    public ErrorMessage getErrorMessage() {
+    public Message getErrorMessage() {
         return errorMessage;
     }
 
-    public void setErrorMessage(ErrorMessage errorMessage) {
-        this.errorMessage = errorMessage;
+    public void setErrorMessage(Message message) {
+        this.errorMessage = message;
     }
 }
diff --git a/connectors/SlideShareConnector/src/main/java/de/l3s/interweb/connector/slideshare/entity/Tag.java b/connectors/SlideShareConnector/src/main/java/de/l3s/interweb/connector/slideshare/entity/Tag.java
index 5fca9103..e1c9c0c4 100644
--- a/connectors/SlideShareConnector/src/main/java/de/l3s/interweb/connector/slideshare/entity/Tag.java
+++ b/connectors/SlideShareConnector/src/main/java/de/l3s/interweb/connector/slideshare/entity/Tag.java
@@ -1,8 +1,11 @@
 package de.l3s.interweb.connector.slideshare.entity;
 
+import io.quarkus.runtime.annotations.RegisterForReflection;
+
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlText;
 
+@RegisterForReflection
 public class Tag {
 
     @JsonProperty("Count")
diff --git a/connectors/SlideShareConnector/src/main/java/de/l3s/interweb/connector/slideshare/entity/Tags.java b/connectors/SlideShareConnector/src/main/java/de/l3s/interweb/connector/slideshare/entity/Tags.java
index 4c7417ff..35efe704 100644
--- a/connectors/SlideShareConnector/src/main/java/de/l3s/interweb/connector/slideshare/entity/Tags.java
+++ b/connectors/SlideShareConnector/src/main/java/de/l3s/interweb/connector/slideshare/entity/Tags.java
@@ -2,9 +2,12 @@
 
 import java.util.List;
 
+import io.quarkus.runtime.annotations.RegisterForReflection;
+
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlElementWrapper;
 
+@RegisterForReflection
 public class Tags {
 
     @JsonProperty("Tag")