diff --git a/AsbCloudApp/Services/IDailyReportService.cs b/AsbCloudApp/Services/IDailyReportService.cs
index 1b8a29d9..333a8821 100644
--- a/AsbCloudApp/Services/IDailyReportService.cs
+++ b/AsbCloudApp/Services/IDailyReportService.cs
@@ -57,6 +57,6 @@ namespace AsbCloudApp.Services
         /// <param name="date"></param>
         /// <param name="token"></param>
         /// <returns></returns>
-        Task<Stream> MakeReportAsync(int idWell, DateTime date, CancellationToken token = default);
+        Task<Stream?> MakeReportAsync(int idWell, DateTime date, CancellationToken token = default);
     }
 }
diff --git a/AsbCloudInfrastructure/Repository/ScheduleRepository.cs b/AsbCloudInfrastructure/Repository/ScheduleRepository.cs
index b43abe98..03c38cc7 100644
--- a/AsbCloudInfrastructure/Repository/ScheduleRepository.cs
+++ b/AsbCloudInfrastructure/Repository/ScheduleRepository.cs
@@ -10,7 +10,6 @@ using System.Threading.Tasks;
 
 namespace AsbCloudInfrastructure.Repository
 {
-#nullable enable
     public class ScheduleRepository : CrudWellRelatedRepositoryBase<ScheduleDto, Schedule>, IScheduleRepository
     {
         private readonly IWellService wellService;
@@ -21,7 +20,7 @@ namespace AsbCloudInfrastructure.Repository
             this.wellService = wellService;
         }
 
-        public async Task<DrillerDto?> GetDrillerAsync(int idWell, DateTime workTime, CancellationToken token)
+        public async Task<DrillerDto> GetDrillerAsync(int idWell, DateTime workTime, CancellationToken token)
         {
             var hoursOffset = wellService.GetTimezone(idWell).Hours;
             var date = workTime.ToUtcDateTimeOffset(hoursOffset);
@@ -64,5 +63,4 @@ namespace AsbCloudInfrastructure.Repository
             return dto;
         }
     }
-#nullable disable
 }
diff --git a/AsbCloudInfrastructure/Services/WellInfoService.cs b/AsbCloudInfrastructure/Services/WellInfoService.cs
index b8b6128a..9b6986bf 100644
--- a/AsbCloudInfrastructure/Services/WellInfoService.cs
+++ b/AsbCloudInfrastructure/Services/WellInfoService.cs
@@ -97,7 +97,7 @@ namespace AsbCloudInfrastructure.Services
                 var wellSubsystemStat = subsystemStat.FirstOrDefault(s => s.Well.Id == well.Id);
 
                 double currentDepth = wellLastTelemetryInfo?.WellDepth
-                    ?? wellLastFactSection?.Fact.WellDepthEnd
+                    ?? wellLastFactSection?.Fact?.WellDepthEnd
                     ?? 0d;
 
                 var wellProcessMaps = processMaps