diff --git a/hazelcast/src/main/java/com/hazelcast/internal/diagnostics/DiagnosticsLogWriterImpl.java b/hazelcast/src/main/java/com/hazelcast/internal/diagnostics/DiagnosticsLogWriterImpl.java
index caff1b00ef00..0a588f572a82 100644
--- a/hazelcast/src/main/java/com/hazelcast/internal/diagnostics/DiagnosticsLogWriterImpl.java
+++ b/hazelcast/src/main/java/com/hazelcast/internal/diagnostics/DiagnosticsLogWriterImpl.java
@@ -214,6 +214,12 @@ private void writeKeyValueHead(String key) {
     }
 
     public void init(PrintWriter printWriter) {
+        // Reset the sectionLevel. A proper rendering of a plugin should always
+        // return this value to -1; but in case of an exception while rendering,
+        // the section level isn't reset and subsequent renderings of plugins
+        // will run into an IndexOutOfBoundsException.
+        // https://github.com/hazelcast/hazelcast/issues/14973
+        sectionLevel = -1;
         this.printWriter = printWriter;
     }