From a3d039a8df6444abeb18e41d97b1f81aff843f99 Mon Sep 17 00:00:00 2001
From: Felix Lange <fjl@twurst.com>
Date: Tue, 2 Jan 2018 13:22:01 +0100
Subject: [PATCH] eth: improve very important error message

---
 eth/api_tracer.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/eth/api_tracer.go b/eth/api_tracer.go
index c7c740d092..26e47dcb6c 100644
--- a/eth/api_tracer.go
+++ b/eth/api_tracer.go
@@ -674,7 +674,7 @@ func (api *PrivateDebugAPI) traceTx(ctx context.Context, message core.Message, v
 		return nil, fmt.Errorf("tracing failed: %v", err)
 	}
 	if err := core.WritePreimages(api.eth.ChainDb(), vmctx.BlockNumber.Uint64(), statedb.Preimages()); err != nil {
-		return nil, fmt.Errorf("error writing preimage from trace: %v", err)
+		return nil, fmt.Errorf("can't write preimage: %v", err)
 	}
 	// Depending on the tracer type, format and return the output
 	switch tracer := tracer.(type) {