diff --git a/web/pgadmin/static/js/Explain/Analysis.jsx b/web/pgadmin/static/js/Explain/Analysis.jsx
index 6ae35f83d..9b396957b 100644
--- a/web/pgadmin/static/js/Explain/Analysis.jsx
+++ b/web/pgadmin/static/js/Explain/Analysis.jsx
@@ -122,7 +122,7 @@ ExplainRow.propTypes = {
       Plans: PropTypes.array,
       level: PropTypes.array,
       _serial: PropTypes.number,
-      parent_node: PropTypes.number,
+      parent_node: PropTypes.string,
       exclusive: PropTypes.number,
       exclusive_flag: PropTypes.string,
       inclusive: PropTypes.number,
diff --git a/web/pgadmin/static/js/Explain/Graphical.jsx b/web/pgadmin/static/js/Explain/Graphical.jsx
index 7fef86d01..8b160f9d3 100644
--- a/web/pgadmin/static/js/Explain/Graphical.jsx
+++ b/web/pgadmin/static/js/Explain/Graphical.jsx
@@ -92,7 +92,7 @@ function Multitext({currentXpos, currentYpos, label, maxWidth}) {
     wordBreakIndex = Math.round((maxWidth / letterWidth)) - 1;
   svgElem.remove();
 
-  let words = label.split(' '),
+  let words = label?.split(' ') ?? '',
     widthSoFar = 0,
     lines = [],
     currLine = '',
diff --git a/web/pgadmin/static/js/Explain/ImageMapper.js b/web/pgadmin/static/js/Explain/ImageMapper.js
index aa19890ef..8c3340db6 100644
--- a/web/pgadmin/static/js/Explain/ImageMapper.js
+++ b/web/pgadmin/static/js/Explain/ImageMapper.js
@@ -168,6 +168,11 @@ const ImageMapper = {
         'image': 'ex_delete.svg',
         'image_text': 'Delete',
       };
+    case 'Merge':
+      return {
+        'image': 'ex_merge.svg',
+        'image_text': 'Merge',
+      };
     }
   },
   'Named Tuplestore Scan': {