jspg error refactoring checkpoint

src/lib.rs

@@ -31,7 +31,7 @@ lazy_static::lazy_static! {
 fn jspg_failure() -> JsonB {
   let error = crate::drop::Error {
     code: "ENGINE_NOT_INITIALIZED".to_string(),
-    message: "JSPG extension has not been initialized via jspg_setup".to_string(),
+    values: None,
     details: crate::drop::ErrorDetails {
       path: None,
       cause: None,