diff --git a/src/background/messages/hello.ts b/src/background/messages/hello.ts
index a972bf6..3ad39ac 100644
--- a/src/background/messages/hello.ts
+++ b/src/background/messages/hello.ts
@@ -23,10 +23,10 @@ const handler: PlasmoMessaging.MessageHandler<BaseRequest, Response> = async (re
       allowed: await isDomainWhitelisted(req.sender.tab.url),
       hasPermission: await hasPermission(),
     });
-  } catch (err: any) {
+  } catch (err) {
     res.send({
       success: false,
-      error: err instanceof Error ? err.message : err,
+      error: err instanceof Error ? err.message : String(err),
     });
   }
 };
diff --git a/src/background/messages/makeRequest.ts b/src/background/messages/makeRequest.ts
index f497c3e..14e0b77 100644
--- a/src/background/messages/makeRequest.ts
+++ b/src/background/messages/makeRequest.ts
@@ -90,11 +90,11 @@ const handler: PlasmoMessaging.MessageHandler<Request, Response<any>> = async (r
         finalUrl: response.url,
       },
     });
-  } catch (err: any) {
+  } catch (err) {
     console.error('failed request', err);
     res.send({
       success: false,
-      error: err instanceof Error ? err.message : err,
+      error: err instanceof Error ? err.message : String(err),
     });
   }
 };
diff --git a/src/background/messages/openPage.ts b/src/background/messages/openPage.ts
index 217dd30..28104f5 100644
--- a/src/background/messages/openPage.ts
+++ b/src/background/messages/openPage.ts
@@ -29,10 +29,10 @@ const handler: PlasmoMessaging.MessageHandler<Request, BaseResponse> = async (re
     res.send({
       success: true,
     });
-  } catch (err: any) {
+  } catch (err) {
     res.send({
       success: false,
-      error: err instanceof Error ? err.message : err,
+      error: err instanceof Error ? err.message : String(err),
     });
   }
 };
diff --git a/src/background/messages/prepareStream.ts b/src/background/messages/prepareStream.ts
index 9023ab4..6fb4fbe 100644
--- a/src/background/messages/prepareStream.ts
+++ b/src/background/messages/prepareStream.ts
@@ -23,10 +23,10 @@ const handler: PlasmoMessaging.MessageHandler<Request, BaseResponse> = async (re
     res.send({
       success: true,
     });
-  } catch (err: any) {
+  } catch (err) {
     res.send({
       success: false,
-      error: err instanceof Error ? err.message : err,
+      error: err instanceof Error ? err.message : String(err),
     });
   }
 };