[QI2-1316] Pennylane reports execution failure errors

pennylane_quantuminspire2/qi_device.py

@@ -1,6 +1,10 @@
 from typing import Any, Optional, Sequence
 
+from pennylane import DeviceError
+from pennylane.devices.execution_config import DefaultExecutionConfig, ExecutionConfig
 from pennylane_qiskit import RemoteDevice
+from pennylane_qiskit.qiskit_device import QuantumTape_or_Batch, Result_or_ResultBatch
+from qiskit.exceptions import QiskitError
 from qiskit_quantuminspire.qi_backend import QIBackend
 from qiskit_quantuminspire.qi_provider import QIProvider
 
@@ -12,6 +16,20 @@ class QI2Device(RemoteDevice):  # type: ignore[misc]
     def __init__(self, backend: QIBackend, **kwargs: Any) -> None:
         super().__init__(wires=backend.num_qubits, backend=backend, **kwargs)
 
+    # pylint: disable=unused-argument, no-member
+    def execute(
+        self,
+        circuits: QuantumTape_or_Batch,
+        execution_config: ExecutionConfig = DefaultExecutionConfig,
+    ) -> Result_or_ResultBatch:
+
+        try:
+            # Your existing execution code here
+            results = super().execute(circuits, execution_config)
+            return results
+        except QiskitError as e:
+            raise DeviceError(str(e)) from e
+
     @classmethod
     def backends(cls) -> Sequence[QIBackend]:
         return cls._qi_provider.backends()  # type: ignore[no-any-return]