From 00fe0473c5bb63ad7120d0882aa5f03174709c67 Mon Sep 17 00:00:00 2001
From: Jessica Lawshe <5312836+lawshe@users.noreply.github.com>
Date: Thu, 19 Feb 2026 11:01:05 -0600
Subject: [PATCH] Merge pull request #31416 from
 overleaf/jel-saml-session-missing

[web] Throw instance of `SAMLAuthenticationError` when missing session data and show error message

GitOrigin-RevId: e64ec571a127367a27eb032bd4a22c90124e8b0f
---
 services/web/app/src/Features/Errors/Errors.js | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/services/web/app/src/Features/Errors/Errors.js b/services/web/app/src/Features/Errors/Errors.js
index 934a70a9fc..fd912cedef 100644
--- a/services/web/app/src/Features/Errors/Errors.js
+++ b/services/web/app/src/Features/Errors/Errors.js
@@ -221,6 +221,12 @@ class SAMLGroupMemberLimitReachedError extends OError {}
 
 class SAMLDomainCaptureManagedOptInUserMissingEmailError extends SAMLDomainCaptureError {}
 
+class SAMLSessionProviderDataMissing extends SAMLAuthenticationError {
+  get i18nKey() {
+    return 'try_again'
+  }
+}
+
 class SAMLSessionDataMissing extends BackwardCompatibleError {
   constructor(arg) {
     super(arg)
@@ -390,6 +396,7 @@ module.exports = {
   SAMLEmailNotAffiliatedError,
   SAMLEmailAffiliatedWithAnotherInstitutionError,
   SAMLSessionDataMissing,
+  SAMLSessionProviderDataMissing,
   SAMLAuthenticationError,
   SAMLGroupSSOLoginIdentityMismatchError,
   SAMLGroupSSOLoginIdentityNotFoundError,