From 47adf765d59f307e4d58fa834402080f79c6d861 Mon Sep 17 00:00:00 2001
From: Brecht Van Lommel <brecht@blender.org>
Date: Wed, 18 Jan 2023 12:18:27 +0100
Subject: [PATCH] Fix 500 error viewing pull request when fork has pull
 requests disabled

Fixes #20826
---
 services/pull/update.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/services/pull/update.go b/services/pull/update.go
index 9e29f63c7c857..e78fd71564374 100644
--- a/services/pull/update.go
+++ b/services/pull/update.go
@@ -117,6 +117,9 @@ func IsUserAllowedToUpdate(ctx context.Context, pull *issues_model.PullRequest,
 			return false, false, err
 		}
 		prUnit, err := pr.BaseRepo.GetUnit(ctx, unit.TypePullRequests)
+		if repo_model.IsErrUnitTypeNotExist(err) {
+			return false, false, nil
+		}
 		if err != nil {
 			log.Error("pr.BaseRepo.GetUnit(unit.TypePullRequests): %v", err)
 			return false, false, err