#485 The error occurs when trying to undo the delete action for a str…

…ucture with stereo bonds
epam · Apr 20, 2021 · dcb9b69 · dcb9b69
1 parent 0504e5b
commit dcb9b69
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/packages/ketcher-react/src/script/chem/struct/fragment.js b/packages/ketcher-react/src/script/chem/struct/fragment.js
@@ -43,7 +43,10 @@ Fragment.STEREO_FLAG = {
  */
 function calcStereoFlag(struct, stereoAids) {
   if (!stereoAids || stereoAids.length === 0) return null
-  const stereoLabel = struct.atoms.get(stereoAids[0]).stereoLabel // {string | null} "<abs|and|or>-<group>"
+  const atomId = stereoAids[0]
+  const atom = struct.atoms.get(atomId)
+  if (!atom) return null
+  const stereoLabel = atom.stereoLabel // {string | null} "<abs|and|or>-<group>"
 
   const hasAnotherLabel = stereoAids
     .map(aid => struct.atoms.get(aid))