I am getting this issue at stage env only after making deployment and getting error at response.
System.InvalidOperationException: Collection was modified; enumeration operation may not execute.
at System.Collections.Generic.List`1.Enumerator.MoveNextRare()
at System.Linq.Enumerable.SelectListIterator`2.MoveNext()
at System.Linq.Enumerable.JoinIterator[TOuter,TInner,TKey,TResult](IEnumerable`1 outer, IEnumerable`1 inner, Func`2 outerKeySelector, Func`2 innerKeySelector, Func`3 resultSelector, IEqualityComparer`1 comparer)+MoveNext()
at System.Linq.Enumerable.JoinIterator[TOuter,TInner,TKey,TResult](IEnumerable`1 outer, IEnumerable`1 inner, Func`2 outerKeySelector, Func`2 innerKeySelector, Func`3 resultSelector, IEqualityComparer`1 comparer)+MoveNext()
at System.Linq.Enumerable.WhereSelectEnumerableIterator`2.MoveNext()
at System.Linq.Enumerable.EnumerablePartition`1.ToList()
at Soulmaker.Services.VideoService.GetClientDetailAsync(Int64 id, Int64 userId)
at Soulmaker.API.Controllers.VideoController.GetClientDetails(Int32 id) in /src/Soulmaker.API/Controllers/VideoController.cs:line 184
at Microsoft.AspNetCore.Mvc.Infrastructure.ActionMethodExecutor.TaskOfIActionResultExecutor.Execute(IActionResultTypeMapper mapper, ObjectMethodExecutor executor, Object controller, Object[] arguments)
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.<InvokeActionMethodAsync>g__Awaited|12_0(ControllerActionInvoker invoker, ValueTask`1 actionResultValueTask)
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.<InvokeNextActionFilterAsync>g__Awaited|10_0(ControllerActionInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Rethrow(ActionExecutedContextSealed context)
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.<InvokeInnerFilterAsync>g__Awaited|13_0(ControllerActionInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeFilterPipelineAsync>g__Awaited|19_0(ResourceInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeAsync>g__Awaited|17_0(ResourceInvoker invoker, Task task, IDisposable scope)
at Microsoft.AspNetCore.Routing.EndpointMiddleware.<Invoke>g__AwaitRequestTask|6_0(Endpoint endpoint, Task requestTask, ILogger logger)
at Microsoft.AspNetCore.Authorization.Policy.AuthorizationMiddlewareResultHandler.HandleAsync(RequestDelegate next, HttpContext context, AuthorizationPolicy policy, PolicyAuthorizationResult authorizeResult)
at Microsoft.AspNetCore.Authorization.AuthorizationMiddleware.Invoke(HttpContext context)
at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware.Invoke(HttpContext context)
at Microsoft.AspNetCore.Builder.Extensions.MapWhenMiddleware.Invoke(HttpContext context)
at Swashbuckle.AspNetCore.SwaggerUI.SwaggerUIMiddleware.Invoke(HttpContext httpContext)
at Swashbuckle.AspNetCore.Swagger.SwaggerMiddleware.Invoke(HttpContext httpContext, ISwaggerProvider swaggerProvider)
at Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware.Invoke(HttpContext context)
What I have tried:
Here is my code:
public async Task<VideoDetailsResponse> GetClientDetailAsync(long id, long userId)
{
var video = await _context.Videos
.Include(x => x.CreatedByUser)
.Include(x => x.Like)
.Include(x => x.PublishedByUser)
.Include(x => x.ModifiedByUser)
.Include(x => x.Tags)
.ThenInclude(x => x.Topic)
.Include(x => x.AdminTags)
.ThenInclude(x => x.AdminTag)
.FirstOrDefaultAsync(x => !x.IsDeleted && !x.IsHidden && x.Id == id);
var response = _mapper.Map<VideoDetailsResponse>(video);
response.IsLiked = video.Like.Any(x => x.UserId == userId);
var items = (from topicId in video.Tags.Select(x => x.TopicId)
join tag in _context.VideoTagLink on topicId equals tag.TopicId
join videoItem in _context.Videos
.Include(x => x.CreatedByUser)
.Include(x => x.Like)
.Include(x => x.PublishedByUser)
.Include(x => x.ModifiedByUser)
.Include(x => x.Tags)
.ThenInclude(x => x.Topic)
.Include(x => x.AdminTags)
.ThenInclude(x => x.AdminTag)
.Where(x => !x.IsDeleted && !x.IsHidden)
on tag.VideoId equals videoItem.Id
where tag.VideoId != id && !videoItem.IsDeleted
select videoItem).Take(2).ToList();
var relatedExperiences = new List<RelatedExpirienceResponse>();
for ( int i = 0; i < items.Count; i++ )
{
var item = _mapper.Map<RelatedExpirienceResponse>(items[i]);
item.IsLiked = items[i].Like.Any(x => x.UserId == userId);
relatedExperiences.Add(item);
}
response.RealtedExpiriences.AddRange(relatedExperiences);
return response;
}