diff --git a/ci/scripts/detect-jdk-updates.sh b/ci/scripts/detect-jdk-updates.sh
index d4bd7684f0f..266d387b232 100755
--- a/ci/scripts/detect-jdk-updates.sh
+++ b/ci/scripts/detect-jdk-updates.sh
@@ -9,23 +9,23 @@ trap 'report_error $? $LINENO' ERR
 
 case "$JDK_VERSION" in
 	java8)
-		 BASE_URL="https://api.adoptopenjdk.net/v3/assets/feature_releases/8"
+		 BASE_URL="https://api.adoptopenjdk.net/v3/assets/feature_releases/8/ga"
 		 ISSUE_TITLE="Upgrade Java 8 version in CI image"
 	;;
 	java11)
-		 BASE_URL="https://api.adoptopenjdk.net/v3/assets/feature_releases/11"
+		 BASE_URL="https://api.adoptopenjdk.net/v3/assets/feature_releases/11/ga"
 		 ISSUE_TITLE="Upgrade Java 11 version in CI image"
 	;;
-	java14)
-		 BASE_URL="https://api.adoptopenjdk.net/v3/assets/feature_releases/14"
-		 ISSUE_TITLE="Upgrade Java 14 version in CI image"
+	java15)
+		 BASE_URL="https://api.adoptopenjdk.net/v3/assets/feature_releases/15/ga"
+		 ISSUE_TITLE="Upgrade Java 15 version in CI image"
 	;;
 	*)
 		echo $"Unknown java version"
 		exit 1;
 esac
 
-response=$( curl -s ${BASE_URL}\/ga\?architecture\=x64\&heap_size\=normal\&image_type\=jdk\&jvm_impl\=hotspot\&os\=linux\&sort_order\=DESC\&vendor\=adoptopenjdk )
+response=$( curl -s ${BASE_URL}\?architecture\=x64\&heap_size\=normal\&image_type\=jdk\&jvm_impl\=hotspot\&os\=linux\&sort_order\=DESC\&vendor\=adoptopenjdk )
 latest=$( jq -r '.[0].binaries[0].package.link' <<< "$response" )
 if [[ ${latest} = "null" || ${latest} = "" ]]; then
 	echo "Could not parse JDK response: $response"
diff --git a/spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/web/mappings/reactive/HandlerFunctionDescription.java b/spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/web/mappings/reactive/HandlerFunctionDescription.java
index 044e27da9c3..f035951338b 100644
--- a/spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/web/mappings/reactive/HandlerFunctionDescription.java
+++ b/spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/web/mappings/reactive/HandlerFunctionDescription.java
@@ -29,7 +29,13 @@ public class HandlerFunctionDescription {
 	private final String className;
 
 	HandlerFunctionDescription(HandlerFunction<?> handlerFunction) {
-		this.className = handlerFunction.getClass().getCanonicalName();
+		this.className = getHandlerFunctionClassName(handlerFunction);
+	}
+
+	private static String getHandlerFunctionClassName(HandlerFunction<?> handlerFunction) {
+		Class<?> functionClass = handlerFunction.getClass();
+		String canonicalName = functionClass.getCanonicalName();
+		return (canonicalName != null) ? canonicalName : functionClass.getName();
 	}
 
 	public String getClassName() {