policies/reputation: handle cache error

Signed-off-by: Jens Langhammer <jens.langhammer@beryju.org>

website/docs/releases/v2021.7.md

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+---
+title: Release 2021.7
+slug: "2021.7"
+---
+
+## Headline Changes
+
+- TLS Support for LDAP Providers
+
+    You can now configure certificates for your LDAP Providers, meaning that all communication will be done encrypted.
+
+- Add bundeled docs
+
+    You can now browse the authentik docs for your version by browsing to `/help`. This means you don't have to rely on an
+    internet connection to check the logs, and you also have the correct logs for your currently running version.
+
+## Minor changes
+
+- Fix LDAP outpost not parsing arrays from user and group attributes correctly
+- Fix LDAP outpost missing a `member` field on groups with all member DNs
+- Allow configuration of Redis port
+- Tunnel Sentry requests through authentik to prevent them being blocked by ad-blockers
+- core: fix error when setting icon/background to url longer than 100 chars
+- events: fix error when slack notification request failed without a response
+- flows: allow variable substitution in flow titles
+- providers/oauth2: allow blank redirect_uris to allow any redirect_uri
+- providers/saml: fix parsing of POST bindings
+- root: set samesite to None for SAML POST flows
+- root: subclass SessionMiddleware to set Secure and SameSite flag depending on context
+- web: fix error when showing error message of request
+
+## Upgrading
+
+This release does not introduce any new requirements.
+
+### docker-compose
+
+Download the docker-compose file for 2021.7 from [here](https://raw.githubusercontent.com/goauthentik/authentik/version-2021.7/docker-compose.yml). Afterwards, simply run `docker-compose up -d`.
+
+### Kubernetes
+
+Upgrade to the latest chart version to get the new images.