vy commented on code in PR #4250:
URL: https://github.com/apache/logging-log4j2/pull/4250#discussion_r3773898440
##########
log4j-core/src/main/java/org/apache/logging/log4j/core/config/plugins/visitors/PluginElementVisitor.java:
##########
@@ -47,6 +47,10 @@ public Object visit(
boolean first = true;
for (final Node child : node.getChildren()) {
final PluginType<?> childType = child.getType();
+ if (childType == null) {
+ LOGGER.debug("Ignoring unresolved element {} in {}.",
child.getName(), node.getName());
Review Comment:
We should increase the severity of this message:
```suggestion
LOGGER.error("Ignoring unresolved element {} in {}.",
child.getName(), node.getName());
```
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