From c822438dec87c49c9764682337bab1bca990e992 Mon Sep 17 00:00:00 2001
From: Vlad Kiselev <shiko-1st@yandex.ru>
Date: Mon, 29 Nov 2021 19:23:38 +0300
Subject: [PATCH] Fixed removed null-coalescing for payment comment (#1609)

---
 src/JoinRpg.Services.Impl/PaymentsService.cs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/JoinRpg.Services.Impl/PaymentsService.cs b/src/JoinRpg.Services.Impl/PaymentsService.cs
index 77789a4e5..89357917b 100644
--- a/src/JoinRpg.Services.Impl/PaymentsService.cs
+++ b/src/JoinRpg.Services.Impl/PaymentsService.cs
@@ -155,7 +155,9 @@ private async Task<Comment> AddPaymentCommentAsync(
                 claim,
                 CurrentUserId,
                 Now,
-                request.CommentText,
+                // Do not remove null-coalescing here!
+                // Payment comment is not necessary, but it must not be null to create comment.
+                request.CommentText ?? "",
                 true,
                 null);
             comment.Finance = new FinanceOperation