diff --git a/client/cypress/tests/components/cards/AuthorCard.cy.js b/client/cypress/tests/components/cards/AuthorCard.cy.js
index 4c4a1cb88..9dacd667a 100644
--- a/client/cypress/tests/components/cards/AuthorCard.cy.js
+++ b/client/cypress/tests/components/cards/AuthorCard.cy.js
@@ -61,7 +61,7 @@ describe('AuthorCard', () => {
       const height = $el.height()
       const defaultHeight = 192
       const defaultWidth = defaultHeight * 0.8
-      expect(width).to.be.closeTo(defaultWidth, 0.01)
+      expect(width).to?.be?.closeTo(defaultWidth, 0.01)
       expect(height).to.be.closeTo(defaultHeight, 0.01)
     })
   })
diff --git a/server/SocketAuthority.js b/server/SocketAuthority.js
index ad55f6605..297184277 100644
--- a/server/SocketAuthority.js
+++ b/server/SocketAuthority.js
@@ -31,7 +31,7 @@ class SocketAuthority {
     Object.values(this.clients)
       .filter((c) => c.user)
       .forEach((client) => {
-        if (onlineUsersMap[client.user.id]) {
+        if (onlineUsersMap[client?.user?.id]) {
           onlineUsersMap[client.user.id].connections++
         } else {
           onlineUsersMap[client.user.id] = {
diff --git a/server/controllers/AuthorController.js b/server/controllers/AuthorController.js
index 82ed3e50a..44375e748 100644
--- a/server/controllers/AuthorController.js
+++ b/server/controllers/AuthorController.js
@@ -38,7 +38,7 @@ class AuthorController {
    * @param {Response} res
    */
   async findOne(req, res) {
-    const include = (req.query.include || '').split(',')
+    const include = (req?.query?.include || '').split(',')
 
     const authorJson = req.author.toOldJSON()