diff --git a/front/src/init/axios.ts b/front/src/init/axios.ts
index 88a90621d..8d457903e 100644
--- a/front/src/init/axios.ts
+++ b/front/src/init/axios.ts
@@ -117,18 +117,27 @@ export const install: InitModule = ({ store, router }) => {
     return Promise.reject(error)
   })
 
-  const refreshAuth = (failedRequest: AxiosError) => {
+  const refreshAuth = async (failedRequest: AxiosError) => {
     if (store.state.auth.oauth.accessToken) {
       console.log('Failed request, refreshing auth…')
-      // maybe the token was expired, let's try to refresh it
-      return store.dispatch('auth/refreshOauthToken').then(() => {
-        if (failedRequest.response) {
-          failedRequest.response.config.headers ??= {}
-          failedRequest.response.config.headers.Authorization = store.getters['auth/header']
+
+      try {
+        // maybe the token was expired, let's try to refresh it
+        await store.dispatch('auth/refreshOauthToken')
+      } catch (error) {
+        if ((error as BackendError).backendErrors.includes('invalid_grant')) {
+          setTimeout(() => store.dispatch('auth/logout'), 0)
         }
 
-        return Promise.resolve()
-      })
+        return Promise.reject(error)
+      }
+
+      if (failedRequest.response) {
+        failedRequest.response.config.headers ??= {}
+        failedRequest.response.config.headers.Authorization = store.getters['auth/header']
+      }
+
+      return Promise.resolve()
     }
 
     return Promise.resolve()
diff --git a/front/src/types.ts b/front/src/types.ts
index a6d95ed8c..64df678f0 100644
--- a/front/src/types.ts
+++ b/front/src/types.ts
@@ -213,7 +213,7 @@ export interface Listening {
 
 // API stuff
 // eslint-disable-next-line
-export interface APIErrorResponse extends Record<string, APIErrorResponse | string[] | { code: string }[]> {}
+export interface APIErrorResponse extends Record<string, APIErrorResponse | string | string[] | { code: string }[]> {}
 
 export interface BackendError extends AxiosError {
   isHandled: boolean
diff --git a/front/src/utils/index.ts b/front/src/utils/index.ts
index 1fd4b0f3d..d865997a9 100644
--- a/front/src/utils/index.ts
+++ b/front/src/utils/index.ts
@@ -4,22 +4,27 @@ import { startCase } from 'lodash-es'
 
 export function parseAPIErrors (responseData: APIErrorResponse, parentField?: string): string[] {
   const errors = []
+
+  const getErrorMessage = (err: string, fieldName?: string) => err.toLocaleLowerCase().includes('this field ')
+    ? `${fieldName}: ${err}`
+    : err
+
   for (const [field, value] of Object.entries(responseData)) {
     let fieldName = startCase(field.replace(/_/g, ' '))
     if (parentField) {
       fieldName = `${parentField} - ${fieldName}`
     }
 
-    if (Array.isArray(value)) {
-      errors.push(...value.map(err => {
-        if (typeof err === 'string') {
-          return err.toLocaleLowerCase().includes('this field ')
-            ? `${fieldName}: ${err}`
-            : err
-        }
+    if (typeof value === 'string') {
+      errors.push(getErrorMessage(value, fieldName))
+      continue
+    }
 
-        return startCase(err.code.replace(/_/g, ' '))
-      }))
+    if (Array.isArray(value)) {
+      errors.push(...value.map(err => typeof err === 'string'
+        ? getErrorMessage(err, fieldName)
+        : startCase(err.code.replace(/_/g, ' '))
+      ))
 
       continue
     }