diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 34c5912..ae04661 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Tue Nov 20 18:24:38 HKT 2018
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.5.1-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.2-all.zip
diff --git a/src/main/java/thc/parser/language/DictionaryAPIRequest.java b/src/main/java/thc/parser/language/DictionaryAPIRequest.java
index 567d5fc..72d749c 100644
--- a/src/main/java/thc/parser/language/DictionaryAPIRequest.java
+++ b/src/main/java/thc/parser/language/DictionaryAPIRequest.java
@@ -45,9 +45,13 @@ protected String getSubDirectory(String audio) {
 
 	@Override
 	public Mono<DictionaryResult> parseResponse(JsonNode node) {
-		String audio, IPA;
+		if (node == null || !node.get(0).has("hwi")) {
+			log.warn("Empty response for query: {}", query);
+			return Mono.empty();
+		}
 
 		try {
+			String audio, IPA;
 			for (Iterator<JsonNode> it = node.get(0).get("hwi").get("prs").elements(); it.hasNext(); ) {
 				JsonNode element = it.next();
 				audio = getAudioText(element);
@@ -62,7 +66,7 @@ public Mono<DictionaryResult> parseResponse(JsonNode node) {
 			IPA = getIPAText(prsNode);
 			return Mono.just(buildResult(audio, IPA));
 		} catch (Exception e) {
-			log.error("Fail parse response: {}", e.toString());
+			log.error("Fail parse response: {}", e, e);
 			return Mono.empty();
 		}
 	}