diff --git a/example/main.js b/example/main.js
index 17366cb..cfc541e 100644
--- a/example/main.js
+++ b/example/main.js
@@ -36,7 +36,7 @@ async function init() {
     log(LogLevel.OK, null, 'Plugin loaded');
   } catch (err) {
     setStatus(false, 'Failed');
-    log(LogLevel.ERR, null, `Load failed: ${err.message}`);
+    log(LogLevel.ERR, null, `Load failed: ${err?.message || String(err)}`);
   }
 }
 
@@ -57,7 +57,7 @@ window.testGenerate = async function() {
     }
     return result;
   } catch (err) {
-    log(LogLevel.ERR, 'generate', err.message);
+    log(LogLevel.ERR, 'generate', err?.message || String(err));
     throw err;
   }
 };
@@ -81,7 +81,7 @@ window.testLoad = async function() {
     }
     return result;
   } catch (err) {
-    log(LogLevel.ERR, 'load', err.message);
+    log(LogLevel.ERR, 'load', err?.message || String(err));
     throw err;
   }
 };
@@ -104,7 +104,7 @@ window.testExec = async function() {
     }
     return result;
   } catch (err) {
-    log(LogLevel.ERR, 'exec', err.message);
+    log(LogLevel.ERR, 'exec', err?.message || String(err));
     throw err;
   }
 };
@@ -120,7 +120,7 @@ window.testQuery = async function() {
     log(LogLevel.OK, 'query', `Resolved: ${result.did}`, result);
     return result;
   } catch (err) {
-    log(LogLevel.ERR, 'query', err.message);
+    log(LogLevel.ERR, 'query', err?.message || String(err));
     throw err;
   }
 };
@@ -143,7 +143,7 @@ window.runAllTests = async function() {
     await testQuery();
     log(LogLevel.OK, null, '=== All tests passed ===');
   } catch (err) {
-    log(LogLevel.ERR, null, `=== Tests failed: ${err.message} ===`);
+    log(LogLevel.ERR, null, `=== Tests failed: ${err?.message || String(err)} ===`);
   }
 };
 
diff --git a/src/enclave.ts b/src/enclave.ts
index 13bfb57..7a00b01 100644
--- a/src/enclave.ts
+++ b/src/enclave.ts
@@ -47,6 +47,7 @@ export class Enclave {
 
     const plugin = await createPlugin(manifest, {
       useWasi: true,
+      runInWorker: true,
       logger: options.debug ? (options.logger as Console) : undefined,
     });