fix some bugs

Signed-off-by: Jess Frazelle <github@jessfraz.com>

rust/kcl-lib/src/execution/mod.rs

@@ -722,7 +722,7 @@ impl ExecutorContext {
         exec_state: &mut ExecState,
         preserve_mem: bool,
     ) -> Result<(EnvironmentRef, Option<ModelingSessionData>), KclErrorWithOutputs> {
-        self.prepare_mem(exec_state).await.unwrap();
+        self.prepare_mem(exec_state).await?;
 
         let mut universe = std::collections::HashMap::new();
 

rust/kcl-lib/src/walk/import_graph.rs

@@ -179,13 +179,13 @@ pub(crate) async fn import_universe(
             let Some(module_info) = exec_state.get_module(module_id) else {
                 return Err(KclError::Internal(KclErrorDetails {
                     message: format!("Module {} not found", module_id),
-                    source_ranges: Default::default(),
+                    source_ranges: vec![import_stmt.into()],
                 }));
             };
             let ModuleRepr::Kcl(program, _) = &module_info.repr else {
                 return Err(KclError::Internal(KclErrorDetails {
                     message: format!("Module {} is not a KCL module", module_id),
-                    source_ranges: Default::default(),
+                    source_ranges: vec![import_stmt.into()],
                 }));
             };
             program.clone()