diff --git a/wren-ui/src/apollo/server/adaptors/wrenAIAdaptor.ts b/wren-ui/src/apollo/server/adaptors/wrenAIAdaptor.ts
index 0722cf36e..e5ca432e1 100644
--- a/wren-ui/src/apollo/server/adaptors/wrenAIAdaptor.ts
+++ b/wren-ui/src/apollo/server/adaptors/wrenAIAdaptor.ts
@@ -222,15 +222,13 @@ export class WrenAIAdaptor implements IWrenAIAdaptor {
       max_categories: input.maxCategories,
       configuration: input.configuration,
     };
-    logger.debug(
-      `Wren AI: Generating recommendation questions, body: ${JSON.stringify(body)}`,
-    );
+    logger.info(`Wren AI: Generating recommendation questions`);
     try {
       const res = await axios.post(
         `${this.wrenAIBaseEndpoint}/v1/question-recommendations`,
         body,
       );
-      logger.debug(
+      logger.info(
         `Wren AI: Generating recommendation questions, queryId: ${res.data.id}`,
       );
       return { queryId: res.data.id };
diff --git a/wren-ui/src/apollo/server/backgrounds/recommend-question.ts b/wren-ui/src/apollo/server/backgrounds/recommend-question.ts
index 9047ac6bf..da33377de 100644
--- a/wren-ui/src/apollo/server/backgrounds/recommend-question.ts
+++ b/wren-ui/src/apollo/server/backgrounds/recommend-question.ts
@@ -164,6 +164,10 @@ export class ProjectRecommendQuestionBackgroundTracker {
   public taskKey(project: Project) {
     return project.id;
   }
+
+  public isExist(project: Project) {
+    return this.tasks[this.taskKey(project)];
+  }
 }
 
 export class ThreadRecommendQuestionBackgroundTracker {
@@ -310,4 +314,8 @@ export class ThreadRecommendQuestionBackgroundTracker {
   public taskKey(thread: Thread) {
     return thread.id;
   }
+
+  public isExist(thread: Thread) {
+    return this.tasks[this.taskKey(thread)];
+  }
 }
diff --git a/wren-ui/src/apollo/server/repositories/projectRepository.ts b/wren-ui/src/apollo/server/repositories/projectRepository.ts
index a567910ee..abf5a2f97 100644
--- a/wren-ui/src/apollo/server/repositories/projectRepository.ts
+++ b/wren-ui/src/apollo/server/repositories/projectRepository.ts
@@ -115,7 +115,7 @@ export class ProjectRepository
   extends BaseRepository<Project>
   implements IProjectRepository
 {
-  private jsonTypeColumns = ['questions', 'questionsError', 'connectionInfo'];
+  private jsonTypeColumns = ['questions', 'questions_error', 'connection_info'];
 
   constructor(knexPg: Knex) {
     super({ knexPg, tableName: 'project' });
@@ -136,8 +136,7 @@ export class ProjectRepository
     if (!isPlainObject(data)) {
       throw new Error('Unexpected db data');
     }
-    const camelCaseData = mapKeys(data, (_value, key) => camelCase(key));
-    const formattedData = mapValues(camelCaseData, (value, key) => {
+    const formattedData = mapValues(data, (value, key) => {
       if (this.jsonTypeColumns.includes(key) && typeof value === 'string') {
         // should return {} if value is null / {}, use value ? {} : JSON.parse(value) will throw error when value is null
         return isEmpty(value) ? {} : JSON.parse(value);
@@ -147,7 +146,10 @@ export class ProjectRepository
       }
       return value;
     });
-    return formattedData as Project;
+    const camelCaseData = mapKeys(formattedData, (_value, key) =>
+      camelCase(key),
+    );
+    return camelCaseData as Project;
   };
 
   public override transformToDBData: (data: Project) => any = (
diff --git a/wren-ui/src/apollo/server/services/askingService.ts b/wren-ui/src/apollo/server/services/askingService.ts
index 4dac12524..8428f89b1 100644
--- a/wren-ui/src/apollo/server/services/askingService.ts
+++ b/wren-ui/src/apollo/server/services/askingService.ts
@@ -390,10 +390,7 @@ export class AskingService implements IAskingService {
       throw new Error(`Thread ${threadId} not found`);
     }
 
-    const tasks = this.threadRecommendQuestionBackgroundTracker.getTasks();
-    const taskKey =
-      this.threadRecommendQuestionBackgroundTracker.taskKey(thread);
-    if (tasks[taskKey]) {
+    if (this.threadRecommendQuestionBackgroundTracker.isExist(thread)) {
       logger.debug(
         `thread "${threadId}" recommended questions are generating, skip the current request`,
       );
diff --git a/wren-ui/src/apollo/server/services/projectService.ts b/wren-ui/src/apollo/server/services/projectService.ts
index 6b6c37ce2..d61f01b87 100644
--- a/wren-ui/src/apollo/server/services/projectService.ts
+++ b/wren-ui/src/apollo/server/services/projectService.ts
@@ -111,14 +111,14 @@ export class ProjectService implements IProjectService {
       questions: [],
       questionsError: null,
     });
-    const tasks = this.projectRecommendQuestionBackgroundTracker.getTasks();
-    const taskKey =
-      this.projectRecommendQuestionBackgroundTracker.taskKey(updatedProject);
-    if (!tasks[taskKey]) {
+
+    if (
+      !this.projectRecommendQuestionBackgroundTracker.isExist(updatedProject)
+    ) {
       this.projectRecommendQuestionBackgroundTracker.addTask(updatedProject);
     } else {
       logger.debug(
-        `Generate Project Recommendation Questions Task ${taskKey} already exists, skip adding`,
+        `Generate Project Recommendation Questions Task ${updatedProject.id} already exists, skip adding`,
       );
     }
   }
diff --git a/wren-ui/src/apollo/server/services/queryService.ts b/wren-ui/src/apollo/server/services/queryService.ts
index 0179c3d3e..e64c2c780 100644
--- a/wren-ui/src/apollo/server/services/queryService.ts
+++ b/wren-ui/src/apollo/server/services/queryService.ts
@@ -268,8 +268,8 @@ export class QueryService implements IQueryService {
     this.telemetry.sendEvent(
       event,
       {
-        correlationId: err.extensions.other.correlationId,
-        processTime: err.extensions.other.processTime,
+        correlationId: err.extensions?.other?.correlationId,
+        processTime: err.extensions?.other?.processTime,
         error: err.message,
         ...others,
       },