Update solr/core/src/java/org/apache/solr/handler/admin/api/CancelTaskAPI.java

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: epugh

solr/core/src/java/org/apache/solr/handler/admin/api/CancelTaskAPI.java

@@ -54,6 +54,7 @@ public CancelTaskAPI(SolrCore solrCore, SolrQueryRequest req, SolrQueryResponse
   public FlexibleSolrJerseyResponse cancelTask(String queryUUID) throws Exception {
     final FlexibleSolrJerseyResponse response =
         instantiateJerseyResponse(FlexibleSolrJerseyResponse.class);
+    ensureRequiredParameterProvided("queryUUID", queryUUID);
     final QueryCancellationHandler cancellationHandler =
         (QueryCancellationHandler) solrCore.getRequestHandler("/tasks/cancel");
     cancellationHandler.handleRequestBody(solrQueryRequest, solrQueryResponse);