Error while running task

System.InvalidOperationException: The operation cannot be completed because the DbContext has been disposed. at System.Data.Entity.Internal.LazyInternalContext.InitializeContext() at System.Data.Entity.Internal.Linq.DbQueryProvider.Execute[TResult](Expression expression) at Nop.Services.Localization.LocalizationService.<>c__DisplayClass23_0.<GetResource>b__0() at Nop.Core.Caching.CacheExtensions.Get[T](ICacheManager cacheManager, String key, Int32 cacheTime, Func`1 acquire) at Nop.Core.Caching.CacheExtensions.Get[T](ICacheManager cacheManager, String key, Func`1 acquire) at Nop.Services.Localization.LocalizationService.GetResource(String resourceKey, Int32 languageId, Boolean logIfNotFound, String defaultValue, Boolean returnEmptyIfNotFound) at Nop.Services.Localization.LocalizationExtensions.GetLocalizedFriendlyName[T](T plugin, ILocalizationService localizationService, Int32 languageId, Boolean returnDefaultValue) at Nop.Plugin.Integration.ODBC.Core.Mapping.<>c__DisplayClass2_0.<MapPaymentMethod>b__0(IPaymentMethod p) at System.Linq.Enumerable.WhereListIterator`1.MoveNext() at System.Linq.Enumerable.FirstOrDefault[TSource](IEnumerable`1 source) at Nop.Plugin.Integration.ODBC.Core.Mapping.MapPaymentMethod(String paymentMethod) at Nop.Plugin.Integration.OrderExport.Core.ODBCContext.InsertOrder(OrderExtensionRecord orderExt) at Nop.Plugin.Integration.OrderExport.OrderExportTask.Execute() at Nop.Services.Tasks.Task.Execute(Boolean throwException, Boolean dispose, Boolean ensureRunOnOneWebFarmInstance)