merge

1 files changed, 2 insertions, 2 deletions

diff --git a/src/fields/Schema.ts b/src/fields/Schema.ts
index 98ef3e087..23ac50f74 100644
--- a/src/fields/Schema.ts
+++ b/src/fields/Schema.ts
@@ -31,7 +31,7 @@ export function makeInterface<T extends Interface[]>(...schemas: T): InterfaceFu
     }
     const proto = new Proxy({}, {
         get(target: any, prop, receiver) {
-            const field = receiver.doc[prop];
+            const field = receiver.doc?.[prop];
             if (prop in schema) {
                 const desc = prop === "proto" ? Doc : (schema as any)[prop]; // bcz: proto doesn't appear in schemas ... maybe it should?
                 if (typeof desc === "object" && "defaultVal" in desc && "type" in desc) {//defaultSpec
@@ -52,7 +52,7 @@ export function makeInterface<T extends Interface[]>(...schemas: T): InterfaceFu
             return field;
         },
         set(target: any, prop, value, receiver) {
-            receiver.doc[prop] = value;
+            receiver.doc && (receiver.doc[prop] = value);  // receiver.doc may be undefined as the result of a change in ACLs
             return true;
         }
     });