diff --git a/networkProxy/package.json b/networkProxy/package.json
index 3acce8bae..51b3b49e2 100644
--- a/networkProxy/package.json
+++ b/networkProxy/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@openreplay/network-proxy",
-  "version": "1.1.0",
+  "version": "1.1.1",
   "description": "this library helps us to create proxy objects for fetch, XHR and beacons for proper request tracking.",
   "main": "dist/index.js",
   "module": "dist/index.js",
diff --git a/networkProxy/src/fetchProxy.ts b/networkProxy/src/fetchProxy.ts
index 483efb46b..e916f8819 100644
--- a/networkProxy/src/fetchProxy.ts
+++ b/networkProxy/src/fetchProxy.ts
@@ -56,9 +56,10 @@ export class ResponseProxyHandler<T extends Response> implements ProxyHandler<T>
     if (typeof this.resp.body.getReader !== 'function') {
       return
     }
-    const _getReader = this.resp.body.getReader
+    const clonedResp = this.resp.clone();
+    const _getReader = clonedResp.body.getReader
     // @ts-ignore
-    this.resp.body.getReader = () => {
+    clonedResp.body.getReader = () => {
       const reader = <ReturnType<typeof _getReader>>_getReader.apply(this.resp.body)
 
       // when readyState is already 4,
diff --git a/networkProxy/src/sanitizers.ts b/networkProxy/src/sanitizers.ts
index 97618123a..dc24d5c68 100644
--- a/networkProxy/src/sanitizers.ts
+++ b/networkProxy/src/sanitizers.ts
@@ -80,15 +80,19 @@ export function filterBody(body: any): string {
     obscureSensitiveData(parsedBody);
     return JSON.stringify(parsedBody);
   } else {
-    const params = new URLSearchParams(body);
-    for (const key of params.keys()) {
-      if (sensitiveParams.has(key.toLowerCase())) {
-        const value = obscure(params.get(key))
-        params.set(key, value);
+    try {
+      const params = new URLSearchParams(body);
+      for (const key of params.keys()) {
+        if (sensitiveParams.has(key.toLowerCase())) {
+          const value = obscure(params.get(key))
+          params.set(key, value);
+        }
       }
+      return params.toString();
+    } catch (e) {
+      // not string or url query
+      return body;
     }
-
-    return params.toString();
   }
 }