diff --git a/electrum/gui/qml/qelnpaymentdetails.py b/electrum/gui/qml/qelnpaymentdetails.py
index 574fb1b011a5..7a62bf35b347 100644
--- a/electrum/gui/qml/qelnpaymentdetails.py
+++ b/electrum/gui/qml/qelnpaymentdetails.py
@@ -94,10 +94,13 @@ def update(self):
         if self._wallet is None:
             self._logger.error('wallet undefined')
             return
-
+        
         # TODO this is horribly inefficient. need a payment getter/query method
-        tx = self._wallet.wallet.lnworker.get_lightning_history()[self._key]
-        self._logger.debug(str(tx))
+        history = self._wallet.wallet.lnworker.get_lightning_history()
+        tx = history.get(self._key)
+        if tx is None:
+            self._logger.warning(f"Payment key {self._key} not found in history.")
+            return  # Or set fields to empty/default
 
         self._fee.msatsInt = 0 if not tx.fee_msat else int(tx.fee_msat)
         self._amount.msatsInt = int(tx.amount_msat)
@@ -109,3 +112,4 @@ def update(self):
         self._preimage = tx.preimage
 
         self.detailsChanged.emit()
+