diff --git a/back/protos/api.proto b/back/protos/api.proto
index 77d35ee9..fc9ac829 100644
--- a/back/protos/api.proto
+++ b/back/protos/api.proto
@@ -92,8 +92,8 @@ message CreateCronRequest {
 
 message UpdateCronRequest {
   int32 id = 1;
-  string command = 2;
-  string schedule = 3;
+  optional string command = 2;
+  optional string schedule = 3;
   optional string name = 4;
   repeated string labels = 5;
   optional int32 sub_id = 6;
diff --git a/back/protos/api.ts b/back/protos/api.ts
index 558cb693..b20c1956 100644
--- a/back/protos/api.ts
+++ b/back/protos/api.ts
@@ -125,8 +125,8 @@ export interface CreateCronRequest {
 
 export interface UpdateCronRequest {
   id: number;
-  command: string;
-  schedule: string;
+  command?: string | undefined;
+  schedule?: string | undefined;
   name?: string | undefined;
   labels: string[];
   sub_id?: number | undefined;
@@ -1797,8 +1797,8 @@ export const CreateCronRequest: MessageFns<CreateCronRequest> = {
 function createBaseUpdateCronRequest(): UpdateCronRequest {
   return {
     id: 0,
-    command: "",
-    schedule: "",
+    command: undefined,
+    schedule: undefined,
     name: undefined,
     labels: [],
     sub_id: undefined,
@@ -1813,10 +1813,10 @@ export const UpdateCronRequest: MessageFns<UpdateCronRequest> = {
     if (message.id !== 0) {
       writer.uint32(8).int32(message.id);
     }
-    if (message.command !== "") {
+    if (message.command !== undefined) {
       writer.uint32(18).string(message.command);
     }
-    if (message.schedule !== "") {
+    if (message.schedule !== undefined) {
       writer.uint32(26).string(message.schedule);
     }
     if (message.name !== undefined) {
@@ -1931,8 +1931,8 @@ export const UpdateCronRequest: MessageFns<UpdateCronRequest> = {
   fromJSON(object: any): UpdateCronRequest {
     return {
       id: isSet(object.id) ? globalThis.Number(object.id) : 0,
-      command: isSet(object.command) ? globalThis.String(object.command) : "",
-      schedule: isSet(object.schedule) ? globalThis.String(object.schedule) : "",
+      command: isSet(object.command) ? globalThis.String(object.command) : undefined,
+      schedule: isSet(object.schedule) ? globalThis.String(object.schedule) : undefined,
       name: isSet(object.name) ? globalThis.String(object.name) : undefined,
       labels: globalThis.Array.isArray(object?.labels) ? object.labels.map((e: any) => globalThis.String(e)) : [],
       sub_id: isSet(object.sub_id) ? globalThis.Number(object.sub_id) : undefined,
@@ -1949,10 +1949,10 @@ export const UpdateCronRequest: MessageFns<UpdateCronRequest> = {
     if (message.id !== 0) {
       obj.id = Math.round(message.id);
     }
-    if (message.command !== "") {
+    if (message.command !== undefined) {
       obj.command = message.command;
     }
-    if (message.schedule !== "") {
+    if (message.schedule !== undefined) {
       obj.schedule = message.schedule;
     }
     if (message.name !== undefined) {
@@ -1982,8 +1982,8 @@ export const UpdateCronRequest: MessageFns<UpdateCronRequest> = {
   fromPartial<I extends Exact<DeepPartial<UpdateCronRequest>, I>>(object: I): UpdateCronRequest {
     const message = createBaseUpdateCronRequest();
     message.id = object.id ?? 0;
-    message.command = object.command ?? "";
-    message.schedule = object.schedule ?? "";
+    message.command = object.command ?? undefined;
+    message.schedule = object.schedule ?? undefined;
     message.name = object.name ?? undefined;
     message.labels = object.labels?.map((e) => e) || [];
     message.sub_id = object.sub_id ?? undefined;
diff --git a/back/schedule/api.ts b/back/schedule/api.ts
index be301543..09adec08 100644
--- a/back/schedule/api.ts
+++ b/back/schedule/api.ts
@@ -39,6 +39,13 @@ export const getEnvs = async (
   callback: sendUnaryData<EnvsResponse>,
 ) => {
   try {
+    if (!call.request.searchValue) {
+      return callback(null, {
+        code: 400,
+        data: [],
+        message: 'searchValue is required',
+      });
+    }
     const envService = Container.get(EnvService);
     const data = await envService.envs(call.request.searchValue);
     callback(null, {
@@ -182,17 +189,35 @@ export const systemNotify = async (
   }
 };
 
+const normalizeCronData = (data: CronItem | null): CronItem | undefined => {
+  if (!data) return undefined;
+  return {
+    ...data,
+    sub_id: data.sub_id ?? undefined,
+    extra_schedules: data.extra_schedules ?? undefined,
+    pid: data.pid ?? undefined,
+    task_before: data.task_before ?? undefined,
+    task_after: data.task_after ?? undefined,
+  };
+};
+
 export const getCronDetail = async (
   call: ServerUnaryCall<CronDetailRequest, CronDetailResponse>,
   callback: sendUnaryData<CronDetailResponse>,
 ) => {
   try {
+    if (!call.request.log_path) {
+      return callback(null, {
+        code: 400,
+        data: undefined,
+        message: 'log_path is required',
+      });
+    }
     const cronService = Container.get(CronService);
     const data = (await cronService.find({
       log_path: call.request.log_path,
     })) as CronItem;
-    console.log('data', data);
-    callback(null, { code: 200, data: data || undefined });
+    callback(null, { code: 200, data: normalizeCronData(data) });
   } catch (e: any) {
     callback(e);
   }
@@ -205,7 +230,7 @@ export const createCron = async (
   try {
     const cronService = Container.get(CronService);
     const data = (await cronService.create(call.request)) as CronItem;
-    callback(null, { code: 200, data });
+    callback(null, { code: 200, data: normalizeCronData(data) });
   } catch (e: any) {
     callback(e);
   }
@@ -217,8 +242,20 @@ export const updateCron = async (
 ) => {
   try {
     const cronService = Container.get(CronService);
-    const data = (await cronService.update(call.request)) as CronItem;
-    callback(null, { code: 200, data });
+    const { id, ...fields } = call.request;
+
+    const updateRequest = {
+      id,
+      ...Object.entries(fields).reduce((acc: any, [key, value]) => {
+        if (value !== undefined) {
+          acc[key] = value;
+        }
+        return acc;
+      }, {}),
+    } as UpdateCronRequest;
+
+    const data = (await cronService.update(updateRequest)) as CronItem;
+    callback(null, { code: 200, data: normalizeCronData(data) });
   } catch (e: any) {
     callback(e);
   }
diff --git a/back/services/cron.ts b/back/services/cron.ts
index 299d691c..add8f1df 100644
--- a/back/services/cron.ts
+++ b/back/services/cron.ts
@@ -58,7 +58,7 @@ export default class CronService {
     return await CrontabModel.create(payload, { returning: true });
   }
 
-  public async update(payload: Crontab): Promise<Crontab> {
+  public async update(payload: Partial<Crontab>): Promise<Crontab> {
     const doc = await this.getDb({ id: payload.id });
     const tab = new Crontab({ ...doc, ...payload });
     tab.saved = false;
diff --git a/shell/preload/client.js b/shell/preload/client.js
index 6ca48a4e..bd154b71 100644
--- a/shell/preload/client.js
+++ b/shell/preload/client.js
@@ -35,7 +35,7 @@ class GrpcClient {
     'getCronDetail',
     'createCron',
     'updateCron',
-    'deleteCrons'
+    'deleteCrons',
   ];
 
   #client;
@@ -79,7 +79,7 @@ class GrpcClient {
   #promisifyMethod(methodName) {
     const capitalizedMethod =
       methodName.charAt(0).toUpperCase() + methodName.slice(1);
-    const grpcMethod = this.#client[capitalizedMethod].bind(this.#client);
+    const method = this.#client[capitalizedMethod].bind(this.#client);
 
     return async (params = {}) => {
       return new Promise((resolve, reject) => {
@@ -88,7 +88,7 @@ class GrpcClient {
           Date.now() + GrpcClient.#config.defaultTimeout,
         );
 
-        grpcMethod(params, metadata, { deadline }, (error, response) => {
+        method(params, metadata, { deadline }, (error, response) => {
           if (error) {
             return reject(error);
           }
@@ -131,4 +131,24 @@ process.on('SIGINT', () => {
   process.exit(0);
 });
 
+process.on('unhandledRejection', (reason, promise) => {
+  if (reason instanceof Error) {
+    if (reason.stack) {
+      const relevantStack = reason.stack
+        .split('\n')
+        .filter((line) => {
+          return (
+            !line.includes('node:internal') &&
+            !line.includes('node_modules/@grpc') &&
+            !line.includes('processTicksAndRejections')
+          );
+        })
+        .join('\n');
+      console.error(relevantStack);
+    }
+  } else {
+    console.error(reason);
+  }
+});
+
 module.exports = grpcClient.getApi();
diff --git a/shell/preload/client.py b/shell/preload/client.py
index ebdf3619..07bad008 100644
--- a/shell/preload/client.py
+++ b/shell/preload/client.py
@@ -29,14 +29,14 @@ def error_handler(func):
                         f'"{k}": {v.__name__}' for k, v in required_fields.items()
                     )
                     raise Exception(
-                        f"unknown error: {func_name}() requires a dictionary with parameters: {{{fields_str}}}"
+                        f"{func_name}() requires a dictionary with parameters: {{{fields_str}}}"
                     ) from None
-            raise Exception(f"unknown error: {str(e)}") from None
+            raise Exception(f"{str(e)}") from None
         except Exception as e:
             error_msg = str(e)
             if "Error:" in error_msg:
                 error_msg = error_msg.split("Error:")[-1].split("\n")[0].strip()
-            raise Exception(f"unknown error: {error_msg}") from None
+            raise Exception(f"{error_msg}") from None
 
     return wrapper