From 09c31f44c573f816fb9ca6f4803c49197438394e Mon Sep 17 00:00:00 2001
From: Stefan Rijnhart <stefan@opener.am>
Date: Wed, 28 Feb 2018 15:40:35 +0100
Subject: [PATCH] [FIX] Don't break printing some upstream reports with invalid
 models When no background configuration is present on the report definition,
 don't try to browse the report model especially because this breaks some
 upstream reports (see https://github.com/odoo/odoo/pull/23389)

---
 report_qweb_pdf_watermark/__manifest__.py  | 2 +-
 report_qweb_pdf_watermark/models/report.py | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/report_qweb_pdf_watermark/__manifest__.py b/report_qweb_pdf_watermark/__manifest__.py
index d11b84934..f4ca0611c 100644
--- a/report_qweb_pdf_watermark/__manifest__.py
+++ b/report_qweb_pdf_watermark/__manifest__.py
@@ -3,7 +3,7 @@
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
 {
     "name": "Pdf watermark",
-    "version": "10.0.1.0.1",
+    "version": "10.0.1.0.2",
     "author": "Therp BV, "
               "Odoo Community Association (OCA)",
     "license": "AGPL-3",
diff --git a/report_qweb_pdf_watermark/models/report.py b/report_qweb_pdf_watermark/models/report.py
index cc89490b9..f77ed7592 100644
--- a/report_qweb_pdf_watermark/models/report.py
+++ b/report_qweb_pdf_watermark/models/report.py
@@ -34,9 +34,9 @@ class Report(models.Model):
         watermark = None
         if report.pdf_watermark:
             watermark = b64decode(report.pdf_watermark)
-        else:
+        elif report.pdf_watermark_expression:
             watermark = tools.safe_eval(
-                report.pdf_watermark_expression or 'None',
+                report.pdf_watermark_expression,
                 dict(env=self.env, docs=self.env[report.model].browse(docids)),
             )
             if watermark: