Bug solved in xml files structure

payment_btcpay/data/payment_acquirer_data.xml

@@ -1,3 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+
 <!--******************************************************************************
 # PAYMENT BTCPAY FOR ODOO
 # 
@@ -18,8 +20,6 @@
 # For a full copy of the GNU General Public License see the LICENSE.txt file.
 # 
 #******************************************************************************-->
-
-<?xml version="1.0" encoding="utf-8"?>
 <openerp>
     <data noupdate="1">
         <record id="payment_acquirer_btcpay" model="payment.acquirer">

payment_btcpay/views/btcpay_configuration_view.xml

@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
 <!--******************************************************************************
 # PAYMENT BTCPAY FOR ODOO
 # 
@@ -19,8 +20,6 @@
 # 
 #******************************************************************************-->
 
-
-<?xml version="1.0" encoding="utf-8"?>
 <openerp>
     <data>
         <record id="acquirer_form_btcpay" model="ir.ui.view">

payment_btcpay/views/btcpay_menus.xml

@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
 <!--******************************************************************************
 # PAYMENT BTCPAY FOR ODOO
 # 
@@ -19,7 +20,6 @@
 # 
 #******************************************************************************-->
 
-<?xml version="1.0" encoding="utf-8"?>
 <openerp>
     <data>
         <!--BtcPay Top Menu-->

payment_btcpay/views/payment_btcpay_templates.xml

@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
 <!--******************************************************************************
 # PAYMENT BTCPAY FOR ODOO
 # 
@@ -19,8 +20,6 @@
 # 
 #******************************************************************************-->
 
-
-<?xml version="1.0" encoding="utf-8"?>
 <openerp>
     <data>
         <template id="btcpay_acquirer_form" name="Btcpay Payment Button">