diff --git a/src/client/shared/wrap.ts b/src/client/shared/wrap.ts
index 1e4d3e8..3581f12 100644
--- a/src/client/shared/wrap.ts
+++ b/src/client/shared/wrap.ts
@@ -74,11 +74,11 @@ export default function (client: ScramjetClient, self: typeof globalThis) {
 			debugger;
 		}
 
-		if (v === self && v.$scramjet) {
+		if (v === self && v?.$scramjet) {
 			debugger;
 		}
 
-		if (iswindow && v instanceof Document && v.defaultView.$scramjet) {
+		if (iswindow && v instanceof Document && v.defaultView?.$scramjet) {
 			debugger;
 		}
 
diff --git a/src/controller/index.ts b/src/controller/index.ts
index d8fc693..e8b9fa7 100644
--- a/src/controller/index.ts
+++ b/src/controller/index.ts
@@ -32,7 +32,7 @@ export class ScramjetController {
 				naiiveRewriter: false,
 				strictRewrites: true,
 				rewriterLogs: true,
-				captureErrors: false,
+				captureErrors: true,
 				cleanErrors: false,
 				scramitize: false,
 				sourcemaps: false,