diff --git a/back/src/org/kar/karideo/api/NodeInterface.java b/back/src/org/kar/karideo/api/NodeInterface.java
index dee715c..07320dd 100644
--- a/back/src/org/kar/karideo/api/NodeInterface.java
+++ b/back/src/org/kar/karideo/api/NodeInterface.java
@@ -257,7 +257,7 @@ public class NodeInterface {
                 ex.printStackTrace();
                 throw new SQLException("Creating node failed, no ID obtained (2).");
             }
-            ps.execute();
+            //ps.execute();
         } catch (SQLException ex) {
             ex.printStackTrace();
         }
diff --git a/back/src/org/kar/karideo/api/VideoResource.java b/back/src/org/kar/karideo/api/VideoResource.java
index 4971383..dd25311 100644
--- a/back/src/org/kar/karideo/api/VideoResource.java
+++ b/back/src/org/kar/karideo/api/VideoResource.java
@@ -14,6 +14,9 @@ import javax.annotation.security.PermitAll;
 import javax.ws.rs.*;
 import javax.ws.rs.core.MediaType;
 import javax.ws.rs.core.Response;
+import javax.ws.rs.core.Response.ResponseBuilder;
+import javax.ws.rs.core.Response.Status;
+
 import java.io.IOException;
 import java.io.InputStream;
 import java.sql.*;
@@ -288,11 +291,16 @@ public class VideoResource {
             System.out.println("    - season: " + season);
             System.out.println("    - episode: " + episode);
             System.out.println("    - title: " + title);
-            System.out.println("    - typeId: " + typeId);
+            System.out.println("    - type: " + typeId);
             System.out.println("    - fileInputStream: " + fileInputStream);
             System.out.println("    - fileMetaData: " + fileMetaData);
             System.out.flush();
-
+            if (typeId == null) {
+                return Response.status(406).
+                        entity("Missong Input 'type'").
+                        type("text/plain").
+                        build();
+            }
 
             long tmpUID = DataResource.getTmpDataId();
             String sha512 = DataResource.saveTemporaryFile(fileInputStream, tmpUID);
@@ -413,10 +421,13 @@ public class VideoResource {
             MediaSmall creation = get(uniqueSQLID);
             return Response.ok(creation).build();
         } catch (Exception ex) {
-            System.out.println("Cat ann unexpected error ... ");
-            ex.printStackTrace();
+            System.out.println("Catch an unexpected error ... " + ex.getMessage());
+            ex.printStackTrace();         
+            return Response.status(417).
+                    entity("Back-end error : " + ex.getMessage()).
+                    type("text/plain").
+                    build();
         }
-        return Response.serverError().build();
     }
     @POST
     @Path("{id}/add_cover")
diff --git a/front/src/app/scene/upload/upload.html b/front/src/app/scene/upload/upload.html
index c7882c0..3adc21a 100644
--- a/front/src/app/scene/upload/upload.html
+++ b/front/src/app/scene/upload/upload.html
@@ -33,11 +33,11 @@
 		</table>
 	</div>
 
-	<div *ngIf="this.parsedElement.length != 0" class="title">
+	<div *ngIf="this.parsedElement.length !== 0" class="title">
 		Meta-data:
 	</div>
 	<div class="clear"><br/></div>
-	<div *ngIf="this.parsedElement.length != 0" class="fill-all">
+	<div *ngIf="this.parsedElement.length !== 0" class="fill-all">
 		<div class="request_raw_table">
 			<table>
 				<colgroup>
@@ -49,9 +49,9 @@
 					<tr>
 						<td class="left-colomn">Type:</td>
 						<td class="right-colomn">
-							<select [ngModel]="type_id"
+							<select [ngModel]="typeId"
 								(ngModelChange)="onChangeType($event)"
-								[class.error]="type_id == null">
+								[class.error]="typeId === undefined">
 								<option *ngFor="let element of listType" [ngValue]="element.value">{{element.label}}</option>
 							</select>
 						</td>
@@ -61,7 +61,7 @@
 						<td class="right-colomn">
 							<input type="text"
 								placeholder="Universe of the Media"
-								[value]="global_universe"
+								[value]="globalUniverse"
 								(input)="onUniverse($event.target.value)"
 								/>
 						</td>
@@ -71,7 +71,7 @@
 						<td class="right-colomn">
 							<input type="text"
 								placeholder="Series of the Media"
-								[value]="global_series"
+								[value]="globalSeries"
 								(input)="onSeries($event.target.value)"
 								/>
 						</td>
@@ -79,7 +79,7 @@
 					<tr>
 						<td class="left-colomn"></td>
 						<td class="right-colomn">
-							<select [ngModel]="series_id"
+							<select [ngModel]="seriesId"
 									(ngModelChange)="onChangeSeries($event)">
 								<option *ngFor="let element of listSeries" [ngValue]="element.value">{{element.label}}</option>
 							</select>
@@ -98,7 +98,7 @@
 							<input type="number"
 								pattern="[0-9]{0-4}"
 								placeholder="season of the Media"
-								[value]="global_season"
+								[value]="globalSeason"
 								(input)="onSeason($event.target.value)"
 								/>
 						</td>
@@ -128,7 +128,7 @@
 								placeholder="e?"
 								[value]="data.episode"
 								(input)="onEpisode(data, $event.target.value)"
-								[class.error]="data.episodeDetected == true"
+								[class.error]="data.episodeDetected === true"
 							 />
 						</td>
 						<td class="right-colomn" >
@@ -136,9 +136,9 @@
 								placeholder="Name of the Media"
 								[value]="data.title"
 								(input)="onTitle(data, $event.target.value)"
-								[class.error]="data.title == ''"
+								[class.error]="data.title === ''"
 								/>
-							<span *ngIf="data.nameDetected == true" class="error">
+							<span *ngIf="data.nameDetected === true" class="error">
 								^^^This title already exist !!!
 							</span>
 						</td>
@@ -164,7 +164,7 @@
 			</button>
 		</div>
 		<div class="clear"></div>
-		<div class="request_raw_table" *ngIf="this.listFileInBdd != null">
+		<div class="request_raw_table" *ngIf="this.listFileInBdd !== undefined">
 			<table>
 				<colgroup>
 					<col style="width:10%">
@@ -179,14 +179,14 @@
 				</thead>
 				<tbody>
 					<tr *ngFor="let data of this.listFileInBdd">
-						<td class="left-colomn" [class.error]="data.episodeDetected == true">{{data.episode}}</td>
-						<td class="right-colomn" [class.error]="data.nameDetected == true">{{data.name}}</td>
+						<td class="left-colomn" [class.error]="data.episodeDetected === true">{{data.episode}}</td>
+						<td class="right-colomn" [class.error]="data.nameDetected === true">{{data.name}}</td>
 					</tr>
 				</tbody>
 			</table>
 		</div>
 	</div>
-	<div *ngIf="this.parsedElement.length != 0" class="fill-all">
+	<div *ngIf="this.parsedElement.length !== 0" class="fill-all">
 		<div class="request_raw_table">
 			<table>
 				<colgroup>
diff --git a/front/src/app/scene/upload/upload.ts b/front/src/app/scene/upload/upload.ts
index 403848a..e084301 100644
--- a/front/src/app/scene/upload/upload.ts
+++ b/front/src/app/scene/upload/upload.ts
@@ -58,7 +58,7 @@ export class UploadScene implements OnInit {
 	selectedFiles: FileList;
 	typeId: number = null;
 	seriesId: number = null;
-	saisonId: number = null;v
+	saisonId: number = null;
 	needSend: boolean = false;
 
 	// list of all files already registered in the bdd to compare with the curent list of files.
@@ -391,10 +391,10 @@ export class UploadScene implements OnInit {
 				iii--;
 			}
 		}
-
-		this.globalUniverse = this.parsedElement[0].universe;
-		this.globalSeries = this.parsedElement[0].series;
-		this.globalSeason = this.parsedElement[0].season;
+		console.log(`check : ${JSON.stringify(this.parsedElement[0])}`)
+		this.globalUniverse = this.parsedElement[0].universe ?? '';
+		this.globalSeries = this.parsedElement[0].series ?? '';
+		this.globalSeason = this.parsedElement[0].season ?? null;
 
 		this.updateNeedSend();
 		this.seriesId = null;
diff --git a/front/src/app/service/video.ts b/front/src/app/service/video.ts
index f18e480..9d4be34 100644
--- a/front/src/app/service/video.ts
+++ b/front/src/app/service/video.ts
@@ -55,25 +55,25 @@ export class VideoService {
 	}
 
 	uploadFile(file:File,
-			   universe:string,
-			   series:string,
-			   seriesId:number,
-			   season:number,
-			   episode:number,
-			   title:string,
-			   typeId:number,
+			   universe?:string,
+			   series?:string,
+			   seriesId?:number,
+			   season?:number,
+			   episode?:number,
+			   title?:string,
+			   typeId?:number,
 			   progress:any = null) {
 	    const formData = new FormData();
 	    formData.append('file_name', file.name);
 	    // set the file at hte begining it will permit to abort the transmission
-	    formData.append('file', file);
-	    formData.append('universe', universe);
+	    formData.append('file', file?? null);
+	    formData.append('universe', universe?? null);
 	    if(seriesId !== null) {
-	    	formData.append('seriesId', seriesId.toString());
+	    	formData.append('series', seriesId.toString());
 	    } else {
-	    	formData.append('seriesId', null);
+	    	formData.append('series', null);
 	    }
-	    formData.append('series', series);
+	    formData.append('series', series?? null);
 	    if(season !== null) {
 	    	formData.append('season', season.toString());
 	    } else {
@@ -85,7 +85,7 @@ export class VideoService {
 	    } else {
 	    	formData.append('episode', null);
 	    }
-	    formData.append('title', title);
+	    formData.append('title', title?? null);
 
 	    if(typeId !== null) {
 	    	formData.append('typeId', typeId.toString());