diff --git a/package.json b/package.json
index a92ecf8..daee31f 100644
--- a/package.json
+++ b/package.json
@@ -5,7 +5,7 @@
   "main": "index.js",
   "type": "module",
   "scripts": {
-    "build": "deno build.ts --tagName 1.71.1rc0 > ubo.js",
+    "build": "deno build.ts --tagName 1.72.1b0 > ubo.js",
     "test": "node --test"
   },
   "author": {
diff --git a/ubo.js b/ubo.js
index 3ebe736..fa540ec 100644
--- a/ubo.js
+++ b/ubo.js
@@ -2181,7 +2181,7 @@ class JSONPath {
         return listout;
     }
     #expandKey(owner, k) {
-        if ( typeof owner !== 'object' ) { return; }
+        if ( typeof owner !== 'object' || owner === null ) { return; }
         if ( Array.isArray(k) ) {
             const out = [];
             for ( const a of k ) {
@@ -3030,7 +3030,7 @@ class JSONPath {
         return listout;
     }
     #expandKey(owner, k) {
-        if ( typeof owner !== 'object' ) { return; }
+        if ( typeof owner !== 'object' || owner === null ) { return; }
         if ( Array.isArray(k) ) {
             const out = [];
             for ( const a of k ) {
@@ -3879,7 +3879,7 @@ class JSONPath {
         return listout;
     }
     #expandKey(owner, k) {
-        if ( typeof owner !== 'object' ) { return; }
+        if ( typeof owner !== 'object' || owner === null ) { return; }
         if ( Array.isArray(k) ) {
             const out = [];
             for ( const a of k ) {
@@ -4728,7 +4728,7 @@ class JSONPath {
         return listout;
     }
     #expandKey(owner, k) {
-        if ( typeof owner !== 'object' ) { return; }
+        if ( typeof owner !== 'object' || owner === null ) { return; }
         if ( Array.isArray(k) ) {
             const out = [];
             for ( const a of k ) {
@@ -5577,7 +5577,7 @@ class JSONPath {
         return listout;
     }
     #expandKey(owner, k) {
-        if ( typeof owner !== 'object' ) { return; }
+        if ( typeof owner !== 'object' || owner === null ) { return; }
         if ( Array.isArray(k) ) {
             const out = [];
             for ( const a of k ) {
@@ -6453,7 +6453,7 @@ class JSONPath {
         return listout;
     }
     #expandKey(owner, k) {
-        if ( typeof owner !== 'object' ) { return; }
+        if ( typeof owner !== 'object' || owner === null ) { return; }
         if ( Array.isArray(k) ) {
             const out = [];
             for ( const a of k ) {
@@ -7329,7 +7329,7 @@ class JSONPath {
         return listout;
     }
     #expandKey(owner, k) {
-        if ( typeof owner !== 'object' ) { return; }
+        if ( typeof owner !== 'object' || owner === null ) { return; }
         if ( Array.isArray(k) ) {
             const out = [];
             for ( const a of k ) {
@@ -8188,7 +8188,7 @@ class JSONPath {
         return listout;
     }
     #expandKey(owner, k) {
-        if ( typeof owner !== 'object' ) { return; }
+        if ( typeof owner !== 'object' || owner === null ) { return; }
         if ( Array.isArray(k) ) {
             const out = [];
             for ( const a of k ) {
@@ -9019,7 +9019,7 @@ class JSONPath {
         return listout;
     }
     #expandKey(owner, k) {
-        if ( typeof owner !== 'object' ) { return; }
+        if ( typeof owner !== 'object' || owner === null ) { return; }
         if ( Array.isArray(k) ) {
             const out = [];
             for ( const a of k ) {
@@ -9848,7 +9848,7 @@ class JSONPath {
         return listout;
     }
     #expandKey(owner, k) {
-        if ( typeof owner !== 'object' ) { return; }
+        if ( typeof owner !== 'object' || owner === null ) { return; }
         if ( Array.isArray(k) ) {
             const out = [];
             for ( const a of k ) {
@@ -10677,7 +10677,7 @@ class JSONPath {
         return listout;
     }
     #expandKey(owner, k) {
-        if ( typeof owner !== 'object' ) { return; }
+        if ( typeof owner !== 'object' || owner === null ) { return; }
         if ( Array.isArray(k) ) {
             const out = [];
             for ( const a of k ) {
@@ -11509,7 +11509,7 @@ class JSONPath {
         return listout;
     }
     #expandKey(owner, k) {
-        if ( typeof owner !== 'object' ) { return; }
+        if ( typeof owner !== 'object' || owner === null ) { return; }
         if ( Array.isArray(k) ) {
             const out = [];
             for ( const a of k ) {
@@ -12391,7 +12391,7 @@ class JSONPath {
         return listout;
     }
     #expandKey(owner, k) {
-        if ( typeof owner !== 'object' ) { return; }
+        if ( typeof owner !== 'object' || owner === null ) { return; }
         if ( Array.isArray(k) ) {
             const out = [];
             for ( const a of k ) {
@@ -13270,7 +13270,7 @@ class JSONPath {
         return listout;
     }
     #expandKey(owner, k) {
-        if ( typeof owner !== 'object' ) { return; }
+        if ( typeof owner !== 'object' || owner === null ) { return; }
         if ( Array.isArray(k) ) {
             const out = [];
             for ( const a of k ) {
@@ -14071,7 +14071,7 @@ class JSONPath {
         return listout;
     }
     #expandKey(owner, k) {
-        if ( typeof owner !== 'object' ) { return; }
+        if ( typeof owner !== 'object' || owner === null ) { return; }
         if ( Array.isArray(k) ) {
             const out = [];
             for ( const a of k ) {
@@ -14904,7 +14904,7 @@ class JSONPath {
         return listout;
     }
     #expandKey(owner, k) {
-        if ( typeof owner !== 'object' ) { return; }
+        if ( typeof owner !== 'object' || owner === null ) { return; }
         if ( Array.isArray(k) ) {
             const out = [];
             for ( const a of k ) {
@@ -15737,7 +15737,7 @@ class JSONPath {
         return listout;
     }
     #expandKey(owner, k) {
-        if ( typeof owner !== 'object' ) { return; }
+        if ( typeof owner !== 'object' || owner === null ) { return; }
         if ( Array.isArray(k) ) {
             const out = [];
             for ( const a of k ) {
@@ -16553,7 +16553,7 @@ class JSONPath {
         return listout;
     }
     #expandKey(owner, k) {
-        if ( typeof owner !== 'object' ) { return; }
+        if ( typeof owner !== 'object' || owner === null ) { return; }
         if ( Array.isArray(k) ) {
             const out = [];
             for ( const a of k ) {
@@ -17286,7 +17286,7 @@ class JSONPath {
         return listout;
     }
     #expandKey(owner, k) {
-        if ( typeof owner !== 'object' ) { return; }
+        if ( typeof owner !== 'object' || owner === null ) { return; }
         if ( Array.isArray(k) ) {
             const out = [];
             for ( const a of k ) {
@@ -18233,7 +18233,7 @@ class JSONPath {
         return listout;
     }
     #expandKey(owner, k) {
-        if ( typeof owner !== 'object' ) { return; }
+        if ( typeof owner !== 'object' || owner === null ) { return; }
         if ( Array.isArray(k) ) {
             const out = [];
             for ( const a of k ) {
@@ -19180,7 +19180,7 @@ class JSONPath {
         return listout;
     }
     #expandKey(owner, k) {
-        if ( typeof owner !== 'object' ) { return; }
+        if ( typeof owner !== 'object' || owner === null ) { return; }
         if ( Array.isArray(k) ) {
             const out = [];
             for ( const a of k ) {
@@ -20124,7 +20124,7 @@ class JSONPath {
         return listout;
     }
     #expandKey(owner, k) {
-        if ( typeof owner !== 'object' ) { return; }
+        if ( typeof owner !== 'object' || owner === null ) { return; }
         if ( Array.isArray(k) ) {
             const out = [];
             for ( const a of k ) {
@@ -21173,7 +21173,7 @@ class JSONPath {
         return listout;
     }
     #expandKey(owner, k) {
-        if ( typeof owner !== 'object' ) { return; }
+        if ( typeof owner !== 'object' || owner === null ) { return; }
         if ( Array.isArray(k) ) {
             const out = [];
             for ( const a of k ) {
@@ -22020,7 +22020,7 @@ class JSONPath {
         return listout;
     }
     #expandKey(owner, k) {
-        if ( typeof owner !== 'object' ) { return; }
+        if ( typeof owner !== 'object' || owner === null ) { return; }
         if ( Array.isArray(k) ) {
             const out = [];
             for ( const a of k ) {
@@ -22784,7 +22784,7 @@ class JSONPath {
         return listout;
     }
     #expandKey(owner, k) {
-        if ( typeof owner !== 'object' ) { return; }
+        if ( typeof owner !== 'object' || owner === null ) { return; }
         if ( Array.isArray(k) ) {
             const out = [];
             for ( const a of k ) {
@@ -23758,7 +23758,7 @@ class JSONPath {
         return listout;
     }
     #expandKey(owner, k) {
-        if ( typeof owner !== 'object' ) { return; }
+        if ( typeof owner !== 'object' || owner === null ) { return; }
         if ( Array.isArray(k) ) {
             const out = [];
             for ( const a of k ) {