added translation key with variable

frontend/i18next.scanner/en/translation.json

   "Change your status": "Change your status",
   "subscriber": "subscriber",
   "unsubscribed": "unsubscribed",
-  "Start a new Thread": "Start a new Thread",
-  "Writing a document": "Writing a document",
-  "Upload a file": "Upload a file",
-  "Start a videoconference": "Start a videoconference",
-  "View the Calendar": "View the Calendar",
   "Recent activity": "Recent activity",
   "Mark everything as read": "Mark everything as read",
   "See more": "See more",
   "Enter the name or email of the member": "Enter the name or email of the member",
   "Create an account": "Create an account",
   "Choose the role of the member": "Choose the role of the member",
-  "Supervisor": "Supervisor",
-  "Content Manager": "Content Manager",
-  "Contributor": "Contributor",
-  "Reader": "Reader",
   "Validate": "Validate",
   "Implement Tracim in your explorer": "Implement Tracim in your explorer",
   "Find all your documents deposited online directly on your computer via the workstation, without going through the software.": "Find all your documents deposited online directly on your computer via the workstation, without going through the software.",
   "Workspace Calendar": "Workspace Calendar",
   "Each workspace has its own calendar.": "Each workspace has its own calendar.",
   "Email Adress": "Email Adress",
-  "Explore the workspace": "Explore the workspace",
   "Old password": "Old password",
   "New password": "New password",
   "Name:": "Name:",
   "Email Adress:": "Email Adress:",
-  "An error has happened": "An error has happened",
   "You have subscribed to this workspace's notifications": "You have subscribed to this workspace's notifications",
   "Connection": "Connection",
   "Forgotten password ?": "Forgotten password ?",
-  "currently, you are ": "currently, you are "
+  "An error has happened when fetching workspace detail": "An error has happened when fetching workspace detail",
+  "An error has happened while fetching member list": "An error has happened while fetching member list",
+  "An error has happened while fetching recent activity list": "An error has happened while fetching recent activity list",
+  "An error has happened while fetching read status list": "An error has happened while fetching read status list",
+  "Hi {{name}} ! Currently, you are ": "Hi {{name}} ! Currently, you are "
 }

frontend/i18next.scanner/fr/translation.json

   "Change your status": "Changer de status",
   "subscriber": "Abonné(e)",
   "unsubscribed": "Non Abonné(e)",
-  "Start a new Thread": "Débuter une nouvelle discussion",
-  "Writing a document": "Rédiger un document",
-  "Upload a file": "Importer un fichier",
-  "Start a videoconference": "Débuter une visioconférence",
-  "View the Calendar": "Voir le Calendrier",
-  "Explore the workspace": "Explorer l'espace de travail",
   "Recent activity": "Activité récente",
   "Mark everything as read": "Tout marquer comme lu",
   "See more": "Voir plus",
   "Add a member": "Ajouter un membre",
   "Enter the name or email of the member": "Renseigner le nom ou l'email de l'utilisateur",
   "Create an account": "Créer un compte",
-  "Supervisor": "Responsable",
-  "Content Manager": "Gestionnaire de contenu",
-  "Contributor": "Contributeur",
-  "Reader": "Lecteur",
   "Validate": "Validé",
   "Implement Tracim in your explorer": "Implémenter Tracim dans votre explorateur",
   "Find all your documents deposited online directly on your computer via the workstation, without going through the software.": "Retrouvez tous vos documents déposés en ligne directement sur votre ordinateur via le poste de travail, sans passer par le logiciel.",
   "New password": "Nouveau mot de passe",
   "Name:": "Nom :",
   "Email Adress:": "Adresse mail :",
-  "An error has happened": "__NOT_TRANSLATED__",
   "You have subscribed to this workspace's notifications": "Vous êtes abonné aux notifications de cet espace de travail.",
   "Connection": "Connexion",
   "Forgotten password ?": "Mot de passe oublié ?",
-  "currently, you are ": "actuellement, vous êtes "
+  "An error has happened when fetching workspace detail": "__NOT_TRANSLATED__",
+  "An error has happened while fetching member list": "__NOT_TRANSLATED__",
+  "An error has happened while fetching recent activity list": "__NOT_TRANSLATED__",
+  "An error has happened while fetching read status list": "__NOT_TRANSLATED__",
+  "Hi {{name}} ! Currently, you are ": "Bonjour {{name}} ! Vous êtes actuellement"
 }

frontend/src/container/Dashboard.jsx

       case 200:
         props.dispatch(setWorkspaceDetail(fetchWorkspaceDetail.json)); break
       default:
-        props.dispatch(newFlashMessage(props.t('An error has happened when fetching workspace detail'), 'warning')); break
+        props.dispatch(newFlashMessage(props.t('An error has happened while fetching workspace detail'), 'warning')); break
     }
 
     const fetchWorkspaceMemberList = await props.dispatch(getWorkspaceMemberList(props.user, state.workspaceIdInUrl))
               <div className='dashboard__userstatut'>
                 <div className='dashboard__userstatut__role'>
                   <div className='dashboard__userstatut__role__msg'>
-                    {props.t(`Hi ! ${props.user.public_name} `)}{props.t('currently, you are ')}
+                    {props.t('Hi {{name}} ! Currently, you are ', {name: props.user.public_name})}
                   </div>
 
                   {(() => {