diff --git a/package-lock.json b/package-lock.json
index 4b64ffe..6df0e52 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@lenne.tech/nest-server",
-  "version": "10.2.0",
+  "version": "10.2.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@lenne.tech/nest-server",
-      "version": "10.2.0",
+      "version": "10.2.1",
       "license": "MIT",
       "dependencies": {
         "@apollo/gateway": "2.5.7",
diff --git a/package.json b/package.json
index ac8495e..9f59ab3 100755
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@lenne.tech/nest-server",
-  "version": "10.2.0",
+  "version": "10.2.1",
   "description": "Modern, fast, powerful Node.js web framework in TypeScript based on Nest with a GraphQL API and a connection to MongoDB (or other databases).",
   "keywords": [
     "node",
diff --git a/spectaql.yml b/spectaql.yml
index 3cee84c..7f24ced 100644
--- a/spectaql.yml
+++ b/spectaql.yml
@@ -11,7 +11,7 @@ servers:
 info:
   title: lT Nest Server
   description: Modern, fast, powerful Node.js web framework in TypeScript based on Nest with a GraphQL API and a connection to MongoDB (or other databases).
-  version: 10.2.0
+  version: 10.2.1
   contact:
     name: lenne.Tech GmbH
     url: https://lenne.tech
diff --git a/src/core/common/helpers/db.helper.ts b/src/core/common/helpers/db.helper.ts
index 27bd9ac..49ac629 100644
--- a/src/core/common/helpers/db.helper.ts
+++ b/src/core/common/helpers/db.helper.ts
@@ -505,8 +505,13 @@ export async function popAndMap<T extends CoreModel>(
 
     // Map result
     if (Array.isArray(result)) {
-      result = result.map(item => (modelClass as any).map(item));
-    } else {
+      result = result.map((item) => {
+        if (item && typeof item === 'object') {
+          return (modelClass as any).map(item);
+        }
+        return item;
+      });
+    } else if (result && typeof result === 'object') {
       result = (modelClass as any).map(result);
     }
 
@@ -514,12 +519,19 @@ export async function popAndMap<T extends CoreModel>(
   } else {
     if (Array.isArray(queryOrDocument)) {
       await setPopulates(queryOrDocument, populateOptions, mongooseModel, { ignoreSelections });
-      result = queryOrDocument.map(item => (modelClass as any).map(item));
+      result = queryOrDocument.map((item) => {
+        if (item && typeof item === 'object') {
+          return (modelClass as any).map(item);
+        }
+        return item;
+      });
 
       // Process document
     } else {
       await setPopulates(queryOrDocument, populateOptions, mongooseModel, { ignoreSelections });
-      result = (modelClass as any).map(queryOrDocument);
+      if (queryOrDocument && typeof queryOrDocument === 'object') {
+        result = (modelClass as any).map(queryOrDocument);
+      }
     }
   }
 
diff --git a/src/core/common/helpers/input.helper.ts b/src/core/common/helpers/input.helper.ts
index 7ce4d48..8535cd4 100644
--- a/src/core/common/helpers/input.helper.ts
+++ b/src/core/common/helpers/input.helper.ts
@@ -262,7 +262,7 @@ export async function check(
   }
 
   // Return value if it is only a basic type
-  if (typeof value !== 'object') {
+  if (!value || typeof value !== 'object') {
     return value;
   }
 
diff --git a/src/core/common/helpers/service.helper.ts b/src/core/common/helpers/service.helper.ts
index 007f84b..00af50c 100644
--- a/src/core/common/helpers/service.helper.ts
+++ b/src/core/common/helpers/service.helper.ts
@@ -92,7 +92,7 @@ export async function prepareInput<T = any>(
   };
 
   // Check input
-  if (typeof input !== 'object') {
+  if (!input || typeof input !== 'object') {
     return input;
   }
 
@@ -206,7 +206,7 @@ export async function prepareOutput<T = { [key: string]: any; map: (...args: any
   };
 
   // Check output
-  if (typeof output !== 'object') {
+  if (!output || typeof output !== 'object') {
     return output;
   }
 
diff --git a/src/core/common/pipes/map-and-validate.pipe.ts b/src/core/common/pipes/map-and-validate.pipe.ts
index 39490b8..1608779 100644
--- a/src/core/common/pipes/map-and-validate.pipe.ts
+++ b/src/core/common/pipes/map-and-validate.pipe.ts
@@ -8,7 +8,7 @@ export class MapAndValidatePipe implements PipeTransform {
   async transform(value: any, metadata: ArgumentMetadata) {
     const { metatype } = metadata;
 
-    if (typeof value !== 'object' || !metatype || isBasicType(metatype)) {
+    if (!value || typeof value !== 'object' || !metatype || isBasicType(metatype)) {
       return value;
     }
 
diff --git a/src/core/common/services/crud.service.ts b/src/core/common/services/crud.service.ts
index 37b99e4..b55d9a0 100644
--- a/src/core/common/services/crud.service.ts
+++ b/src/core/common/services/crud.service.ts
@@ -1,13 +1,11 @@
 import { NotFoundException } from '@nestjs/common';
-import { Document, FilterQuery, Model as MongooseModel, PipelineStage, Query, QueryOptions } from 'mongoose';
+import { Document, FilterQuery, PipelineStage, Query, QueryOptions } from 'mongoose';
 import { FilterArgs } from '../args/filter.args';
-import { getStringIds, popAndMap } from '../helpers/db.helper';
+import { getStringIds } from '../helpers/db.helper';
 import { convertFilterArgsToQuery } from '../helpers/filter.helper';
 import { mergePlain, prepareServiceOptionsForCreate } from '../helpers/input.helper';
 import { ServiceOptions } from '../interfaces/service-options.interface';
 import { CoreModel } from '../models/core-model.model';
-import { ArrayElement } from '../types/array-element.type';
-import { FieldSelection } from '../types/field-selection.type';
 import { PlainObject } from '../types/plain-object.type';
 import { ConfigService } from './config.service';
 import { ModuleService } from './module.service';
@@ -478,38 +476,21 @@ export abstract class CrudService<
   }
 
   /**
-   * Populate, exec and map Mongoose query or document(s) with serviceOptions
+   * Execute, populate and map Mongoose query or document(s) with serviceOptions
    * Generic T is the type of the returned object(s)
    *
    * @example const user = await this.populateAndProcessQuery<User>(User.findById(id), serviceOptions);
-   * @example const users = await this.populateAndProcessQuery<User[]>(User.find({name: {'$regex': 'ma'}}), serviceOptions);
+   * @example const users = await this.populateAndProcessQuery<User[]>(User.find({name: {'$regex': 'ma'}}), {...serviceOptions, populate:['contacts'], force: true});
    */
-  async populateAndProcessQuery<T extends CoreModel | CoreModel[] = CoreModel>(
+  async processQueryOrDocument<T extends CoreModel | CoreModel[] = CoreModel>(
     queryOrDocument: Query<unknown, unknown> | Document | Document[],
-    options?: {
-      fieldSelection?: FieldSelection;
-      ignoreSelections?: boolean;
-      modelClass?: new (...args: any[]) => ArrayElement<T>;
-      populate?: FieldSelection;
-      mongooseModel?: MongooseModel<any>;
-    },
+    serviceOptions?: ServiceOptions,
   ): Promise<T> {
-    const config = {
-      modelClass: this.mainModelConstructor,
-      mongooseModel: this.mainDbModel,
-      ...options,
-    };
-    let result: T;
-    if (config.fieldSelection || config.populate) {
-      result = (await popAndMap<ArrayElement<T>>(
-        queryOrDocument,
-        config.populate || config.fieldSelection,
-        config.modelClass as new (...args: any[]) => ArrayElement<T>,
-        config.mongooseModel)
-      ) as T;
-    } else if (queryOrDocument instanceof Query) {
-      result = (await queryOrDocument.exec()) as T;
-    }
-    return result;
+    return this.process(() => {
+      if (queryOrDocument instanceof Query) {
+        return queryOrDocument.exec();
+      }
+      return queryOrDocument;
+    }, { serviceOptions });
   }
 }
diff --git a/src/core/modules/auth/core-auth.controller.ts b/src/core/modules/auth/core-auth.controller.ts
index b111d88..bfe08f5 100644
--- a/src/core/modules/auth/core-auth.controller.ts
+++ b/src/core/modules/auth/core-auth.controller.ts
@@ -77,7 +77,7 @@ export class CoreAuthController {
     // Check if cookie handling is activated
     if (this.configService.getFastButReadOnly('cookies')) {
       // Set cookies
-      if (typeof result !== 'object') {
+      if (!result || typeof result !== 'object') {
         res.cookie('token', '', { httpOnly: true });
         res.cookie('refreshToken', '', { httpOnly: true });
         return result;
diff --git a/src/core/modules/auth/core-auth.resolver.ts b/src/core/modules/auth/core-auth.resolver.ts
index 95699d6..969af16 100644
--- a/src/core/modules/auth/core-auth.resolver.ts
+++ b/src/core/modules/auth/core-auth.resolver.ts
@@ -96,7 +96,7 @@ export class CoreAuthResolver {
     // Check if cookie handling is activated
     if (this.configService.getFastButReadOnly('cookies')) {
       // Set cookies
-      if (typeof result !== 'object') {
+      if (!result || typeof result !== 'object') {
         ctx.res.cookie('token', '', { httpOnly: true });
         ctx.res.cookie('refreshToken', '', { httpOnly: true });
         return result;