From 9d2629c5c3e6be65c69820be697d10eb20223297 Mon Sep 17 00:00:00 2001
From: SomberNight <somber.night@protonmail.com>
Date: Tue, 4 Feb 2020 19:04:38 +0100
Subject: [PATCH] blockchain.fork: better exception if datadir was deleted
 while running

---
 electrum/blockchain.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/electrum/blockchain.py b/electrum/blockchain.py
index 5f7c36cd7..259941bcd 100644
--- a/electrum/blockchain.py
+++ b/electrum/blockchain.py
@@ -258,6 +258,7 @@ class Blockchain(Logger):
                           parent=parent,
                           forkpoint_hash=hash_header(header),
                           prev_hash=parent.get_hash(forkpoint-1))
+        self.assert_headers_file_available(parent.path())
         open(self.path(), 'w+').close()
         self.save_header(header)
         # put into global dict. note that in some cases