core: add fallback for missing sentry trace

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

authentik/tenants/utils.py

@@ -29,7 +29,10 @@ def get_tenant_for_request(request: HttpRequest) -> Tenant:
 def context_processor(request: HttpRequest) -> dict[str, Any]:
     """Context Processor that injects tenant object into every template"""
     tenant = getattr(request, "tenant", DEFAULT_TENANT)
-    trace = Hub.current.scope.span.to_traceparent()
+    trace = ""
+    span = Hub.current.scope.span
+    if span:
+        trace = span.to_traceparent()
     return {
         "tenant": tenant,
         "footer_links": CONFIG.y("footer_links"),