ApiSystem: fix

common/services/ASC.ApiCache/Startup.cs

@@ -24,6 +24,8 @@
 // content are licensed under the terms of the Creative Commons Attribution-ShareAlike 4.0
 // International. See the License terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode
 
+using ASC.Core;
+
 namespace ASC.ApiCache;
 
 public class Startup
@@ -117,6 +119,8 @@ public class Startup
         {
             app.UseCors(CustomCorsPolicyName);
         }
+
+        app.UseSynchronizationContextMiddleware();
 
         app.UseAuthentication();
 

common/services/ASC.ApiSystem/Startup.cs

@@ -139,6 +139,8 @@ public class Startup
         {
             app.UseCors(CustomCorsPolicyName);
         }
+
+        app.UseSynchronizationContextMiddleware();
 
         app.UseAuthentication();