diff --git a/AsbCloudInfrastructure/Repository/WitsRecordRepository.cs b/AsbCloudInfrastructure/Repository/WitsRecordRepository.cs
index bf98daa5..8eaddbe1 100644
--- a/AsbCloudInfrastructure/Repository/WitsRecordRepository.cs
+++ b/AsbCloudInfrastructure/Repository/WitsRecordRepository.cs
@@ -1,5 +1,4 @@
 using AsbCloudApp.Services;
-using AsbCloudDb;
 using AsbCloudDb.Model;
 using Mapster;
 using Microsoft.EntityFrameworkCore;
@@ -54,9 +53,7 @@ namespace AsbCloudInfrastructure.Repository
                 .Where(d => d.DateTime <= end)
                 .AsNoTracking();
             var data = await query.ToListAsync(token);
-            return data
-                .Where(d => d is not null)
-                .Select(d => Convert(d, timezoneHours));
+            return data.Select(d => Convert(d, timezoneHours));
         }
 
         public async Task<IEnumerable<TDto>> GetLastAsync(int idTelemetry, CancellationToken token)
diff --git a/AsbCloudInfrastructure/Services/DrillingProgram/DrillingProgramService.cs b/AsbCloudInfrastructure/Services/DrillingProgram/DrillingProgramService.cs
index 816cd836..78f15615 100644
--- a/AsbCloudInfrastructure/Services/DrillingProgram/DrillingProgramService.cs
+++ b/AsbCloudInfrastructure/Services/DrillingProgram/DrillingProgramService.cs
@@ -369,10 +369,13 @@ namespace AsbCloudInfrastructure.Services.DrillingProgram
         {
             var file = await fileService.GetOrDefaultAsync(fileMark.IdFile, token);
             var well = await wellService.GetOrDefaultAsync(file!.IdWell, token);
+            if (well is null)
+                throw new ArgumentInvalidException("idWell doesn`t exist", nameof(file.IdWell));
+
             var user = file.Author!;
             var factory = new DrillingMailBodyFactory(configuration);
             var subject = factory.MakeSubject(well, "Загруженный вами документ полностью согласован");
-            var body = factory.MakeMailBodyForPublisherOnFullAccept(well, user.Name, file.Id, file.Name);
+            var body = factory.MakeMailBodyForPublisherOnFullAccept(well, user.Name ?? string.Empty, file.Id, file.Name);
 
             emailService.EnqueueSend(user.Email, subject, body);
         }
@@ -381,10 +384,13 @@ namespace AsbCloudInfrastructure.Services.DrillingProgram
         {
             var file = await fileService.GetOrDefaultAsync(fileMark.IdFile, token);
             var well = await wellService.GetOrDefaultAsync(file!.IdWell, token);
+            if (well is null)
+                throw new ArgumentInvalidException("idWell doesn`t exist", nameof(file.IdWell));
+
             var user = file.Author!;
             var factory = new DrillingMailBodyFactory(configuration);
             var subject = factory.MakeSubject(well, "Загруженный вами документ отклонен");
-            var body = factory.MakeMailBodyForPublisherOnReject(well, user.Name, file.Id, file.Name, fileMark);
+            var body = factory.MakeMailBodyForPublisherOnReject(well, user.Name ?? string.Empty, file.Id, file.Name, fileMark);
 
             emailService.EnqueueSend(user.Email, subject, body);
         }
@@ -392,6 +398,9 @@ namespace AsbCloudInfrastructure.Services.DrillingProgram
         private async Task NotifyApproversAsync(DrillingProgramPart part, int idFile, string fileName, CancellationToken token)
         {
             var well = await wellService.GetOrDefaultAsync(part.IdWell, token);
+            if (well is null)
+                throw new ArgumentInvalidException("idWell doesn`t exist", nameof(part.IdWell));
+
             var factory = new DrillingMailBodyFactory(configuration);
             var subject = factory.MakeSubject(well, "Загружен новый документ для согласования.");
             var users = part.RelatedUsers
@@ -400,7 +409,7 @@ namespace AsbCloudInfrastructure.Services.DrillingProgram
 
             foreach (var user in users)
             {
-                var body = factory.MakeMailBodyForApproverNewFile(well, user.Name, idFile, fileName);
+                var body = factory.MakeMailBodyForApproverNewFile(well, user.Name ?? string.Empty, idFile, fileName);
                 emailService.EnqueueSend(user.Email, subject, body);
             }
         }
@@ -408,9 +417,12 @@ namespace AsbCloudInfrastructure.Services.DrillingProgram
         private async Task NotifyNewPublisherAsync(int idWell, UserDto user, string documentCategory, CancellationToken token)
         {
             var well = await wellService.GetOrDefaultAsync(idWell, token);
+            if (well is null)
+                throw new ArgumentInvalidException("idWell doesn`t exist", nameof(idWell));
+
             var factory = new DrillingMailBodyFactory(configuration);
             var subject = factory.MakeSubject(well, $"От вас ожидается загрузка на портал документа «{documentCategory}»");
-            var body = factory.MakeMailBodyForNewPublisher(well, user.Name, documentCategory);
+            var body = factory.MakeMailBodyForNewPublisher(well, user.Name ?? string.Empty, documentCategory);
             emailService.EnqueueSend(user.Email, subject, body);
         }
 
diff --git a/AsbCloudInfrastructure/Services/WellFinalDocumentsService.cs b/AsbCloudInfrastructure/Services/WellFinalDocumentsService.cs
index 91121ef6..e683532a 100644
--- a/AsbCloudInfrastructure/Services/WellFinalDocumentsService.cs
+++ b/AsbCloudInfrastructure/Services/WellFinalDocumentsService.cs
@@ -125,18 +125,30 @@ namespace AsbCloudInfrastructure.Services
                 {
                     var category = await fileCategoryService.GetOrDefaultAsync(item.IdCategory, token);
                     var well = await wellService.GetOrDefaultAsync(item.IdWell, token);
+                    if(well is null)
+                        throw new ArgumentInvalidException("idWell doesn`t exist", nameof(item.IdWell));
 
-                    SendMessage(well, user, category.Name, message);
+                    SendMessage(well, user, category?.Name ?? string.Empty, message);
                 }
             }
         }
 
-        private void SendMessage(WellDto? well, UserDto user, string documentCategory, string message)
+        private void SendMessage(WellDto well, UserDto user, string documentCategory, string message)
         {
             var factory = new WellFinalDocumentMailBodyFactory(configuration);
             var subject = factory.MakeSubject(well, documentCategory);
-            var body = factory.MakeMailBodyForWellFinalDocument(well, user.Name ?? user.Surname, string.Format(message, documentCategory));
-            emailService.EnqueueSend(user.Email, subject, body);
+
+            if(!string.IsNullOrEmpty(user.Email))
+            {
+                var body = factory.MakeMailBodyForWellFinalDocument(
+                    well,
+                    (user.Name ?? user.Surname ?? string.Empty),
+                    string.Format(message, documentCategory)
+                );
+
+                emailService.EnqueueSend(user.Email, subject, body);
+            }
+            
         }
     }
 #nullable disable
diff --git a/AsbCloudInfrastructure/Services/WellOperationService/ScheduleReportService.cs b/AsbCloudInfrastructure/Services/WellOperationService/ScheduleReportService.cs
index 703d815f..028b16e0 100644
--- a/AsbCloudInfrastructure/Services/WellOperationService/ScheduleReportService.cs
+++ b/AsbCloudInfrastructure/Services/WellOperationService/ScheduleReportService.cs
@@ -82,7 +82,7 @@ namespace AsbCloudInfrastructure.Services.WellOperationService
             var tvdList = tvd.ToList();
             var facts = tvd
                 .Where(t => t.Fact is not null)
-                .Select(t => t.Fact)
+                .Select(t => t.Fact!)
                 .ToList();
 
             DateTime lastFactDate = default;