fix simulation validator for terminal spec

Author: dmarek-flex

tidy3d/__init__.py

@@ -12,9 +12,6 @@
     SolidMedium,
     SolidSpec,
 )
-from tidy3d.components.microwave.auto_path_spec import (
-    AutoPathSpec,
-)
 from tidy3d.components.microwave.data.monitor_data import (
     AntennaMetricsData,
 )
@@ -701,7 +698,6 @@ def set_logging_level(level: str) -> None:
     "IsothermalSteadyChargeDCAnalysis",
     "ChargeToleranceSpec",
     "AntennaMetricsData",
-    "AutoPathSpec",
     "AxisAlignedPathSpec",
     "CompositePathSpec",
     "PathSpec",

tidy3d/components/simulation.py

@@ -4132,22 +4132,27 @@ def _validate_terminal_specs(self) -> None:
             try:
                 v_spec = term_spec.voltage_spec
                 i_spec = term_spec.current_spec
-                if term_spec.v_spec is None and term_spec.i_spec is None:
+                if v_spec is None and i_spec is None:
                     i_spec, _ = AutoPathSpec.create_current_path_specs(
-                        monitor.bounding_box, self.structures, self.grid, monitor.colocate
+                        monitor.bounding_box,
+                        self.structures,
+                        self.grid,
+                        self.symmetry,
+                        self.bounding_box,
+                        monitor.colocate,
                     )
             except ValidationError as e:
                 raise SetupError(
-                    f"Failed to setup automatic impedance calculation for monitor '{monitor.name}': {e} "
-                )
+                    f"Failed to setup automatic impedance calculation for monitor '{monitor.name}'."
+                ) from e
 
             try:
                 _ = make_voltage_integral(v_spec)
                 _ = make_current_integral(i_spec)
             except Exception as e:
                 raise SetupError(
-                    f"Failed to construct path integrals from the terminal specification for monitor '{monitor.name}': {e} "
-                )
+                    f"Failed to construct path integrals from the terminal specification for monitor '{monitor.name}'."
+                ) from e
 
     @cached_property
     def monitors_data_size(self) -> Dict[str, float]: