diff --git a/apps/researcher/src/app/[locale]/debug/backend.ts b/apps/researcher/src/app/[locale]/debug/backend.ts
index 60b607ba3..dc4690403 100644
--- a/apps/researcher/src/app/[locale]/debug/backend.ts
+++ b/apps/researcher/src/app/[locale]/debug/backend.ts
@@ -12,7 +12,9 @@ export async function backendLogAction() {
   const {getToken, sessionId, session, userId} = await auth();
   const token = await getToken();
   const tokenDecoded = token ? jwtDecode(token) : null;
-  const date = dateTimeFormat.format(tokenDecoded?.exp * 1000);
+  const date = tokenDecoded?.exp
+    ? dateTimeFormat.format(tokenDecoded?.exp * 1000)
+    : null;
   console.log('DEBUG BUTTON CLICKED: BACKEND', {
     date,
     token,
diff --git a/apps/researcher/src/app/[locale]/debug/frontend.tsx b/apps/researcher/src/app/[locale]/debug/frontend.tsx
index c559f9e5b..038153e78 100644
--- a/apps/researcher/src/app/[locale]/debug/frontend.tsx
+++ b/apps/researcher/src/app/[locale]/debug/frontend.tsx
@@ -17,7 +17,9 @@ export function DebugButton() {
   const onClick = async () => {
     const token = await getToken();
     const tokenDecoded = token ? jwtDecode(token) : null;
-    const date = dateTimeFormat.format(tokenDecoded?.exp * 1000);
+    const date = tokenDecoded?.exp
+      ? dateTimeFormat.format(tokenDecoded?.exp * 1000)
+      : null;
     console.log('DEBUG BUTTON CLICKED: FRONTEND', {
       date,
       isSignedIn,