From cf2102170e3052f4dfce9d1b2a70401a16ce6deb Mon Sep 17 00:00:00 2001
From: Perminder <permindersingh089@gmail.com>
Date: Sat, 6 Apr 2024 23:17:56 +0530
Subject: [PATCH] fixes

---
 avogadro/qtplugins/forcefield/forcefield.cpp | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/avogadro/qtplugins/forcefield/forcefield.cpp b/avogadro/qtplugins/forcefield/forcefield.cpp
index 0ec38eb4be..92d2d11615 100644
--- a/avogadro/qtplugins/forcefield/forcefield.cpp
+++ b/avogadro/qtplugins/forcefield/forcefield.cpp
@@ -241,6 +241,12 @@ void Forcefield::optimize()
   if (m_molecule == nullptr || m_method == nullptr)
     return;
 
+  if(!m_molecule->atomCount()){
+    QMessageBox::information(nullptr, tr("Avogadro"), 
+    tr("No atoms provided for optimization"));
+    return;
+  }
+  
   // merge all coordinate updates into one step for undo
   bool isInteractive = m_molecule->undoMolecule()->isInteractive();
   m_molecule->undoMolecule()->setInteractive(true);
@@ -353,7 +359,7 @@ void Forcefield::energy()
 {
   if (m_molecule == nullptr || m_method == nullptr)
     return;
-
+  
   int n = m_molecule->atomCount();
   // we have to cast the current 3d positions into a VectorXd
   Core::Array<Vector3> pos = m_molecule->atomPositions3d();