Added test on hklLine and energyLine

js/client/views/3D/reciprocal/trajectory-view.js

@@ -227,9 +227,13 @@ class TrajectoryView3D extends View3D {
         for (let id in this._trajectoryLines) {
             // Update the lines
             let hklLine = this._trajectoryLines[id].hkl;
-            hklLine.updateLine();
+            if (hklLine !== null) {
+                hklLine.updateLine();
+            }
             let energyLine = this._trajectoryLines[id].energy;
-            energyLine.updateLine();
+            if (energyLine !== null) {
+                energyLine.updateLine();
+            }
         }
     }