diff --git a/erpnext/accounts/deferred_revenue.py b/erpnext/accounts/deferred_revenue.py
index d5ab1c1..dd346bc 100644
--- a/erpnext/accounts/deferred_revenue.py
+++ b/erpnext/accounts/deferred_revenue.py
@@ -41,7 +41,7 @@
 	if account:
 		conditions += "AND %s='%s'"%(deferred_account, account)
 	elif company:
-		conditions += "AND p.company='%s'"%(company)
+		conditions += f"AND p.company = {frappe.db.escape(company)}"
 
 	return conditions
 
@@ -360,12 +360,10 @@
 			frappe.flags.deferred_accounting_error = True
 
 def send_mail(deferred_process):
-	title = _("Error while processing deferred accounting for {0}".format(deferred_process))
-	content = _("""
-		Deferred accounting failed for some invoices:
-		Please check Process Deferred Accounting {0}
-		and submit manually after resolving errors
-	""").format(get_link_to_form('Process Deferred Accounting', deferred_process))
+	title = _("Error while processing deferred accounting for {0}").format(deferred_process)
+	link = get_link_to_form('Process Deferred Accounting', deferred_process)
+	content = _("Deferred accounting failed for some invoices:") + "\n"
+	content += _("Please check Process Deferred Accounting {0} and submit manually after resolving errors.").format(link)
 	sendmail_to_system_managers(title, content)
 
 def book_revenue_via_journal_entry(doc, credit_account, debit_account, against,
diff --git a/erpnext/accounts/doctype/gl_entry/gl_entry.py b/erpnext/accounts/doctype/gl_entry/gl_entry.py
index 78febf9..948c513 100644
--- a/erpnext/accounts/doctype/gl_entry/gl_entry.py
+++ b/erpnext/accounts/doctype/gl_entry/gl_entry.py
@@ -75,8 +75,13 @@
 	def pl_must_have_cost_center(self):
 		if frappe.get_cached_value("Account", self.account, "report_type") == "Profit and Loss":
 			if not self.cost_center and self.voucher_type != 'Period Closing Voucher':
-				frappe.throw(_("{0} {1}: Cost Center is required for 'Profit and Loss' account {2}. Please set up a default Cost Center for the Company.")
-					.format(self.voucher_type, self.voucher_no, self.account))
+				msg = _("{0} {1}: Cost Center is required for 'Profit and Loss' account {2}.").format(
+					self.voucher_type, self.voucher_no, self.account)
+				msg += " "
+				msg += _("Please set the cost center field in {0} or setup a default Cost Center for the Company.").format(
+					self.voucher_type)
+
+				frappe.throw(msg, title=_("Missing Cost Center"))
 
 	def validate_dimensions_for_pl_and_bs(self):
 		account_type = frappe.db.get_value("Account", self.account, "report_type")
diff --git a/erpnext/accounts/doctype/pos_closing_entry/pos_closing_entry.js b/erpnext/accounts/doctype/pos_closing_entry/pos_closing_entry.js
index aa0c53e..8c5a34a 100644
--- a/erpnext/accounts/doctype/pos_closing_entry/pos_closing_entry.js
+++ b/erpnext/accounts/doctype/pos_closing_entry/pos_closing_entry.js
@@ -101,15 +101,24 @@
 	},
 
 	before_save: function(frm) {
+		frm.set_value("grand_total", 0);
+		frm.set_value("net_total", 0);
+		frm.set_value("total_quantity", 0);
+		frm.set_value("taxes", []);
+
+		for (let row of frm.doc.payment_reconciliation) {
+			row.expected_amount = 0;
+		}
+
 		for (let row of frm.doc.pos_transactions) {
 			frappe.db.get_doc("POS Invoice", row.pos_invoice).then(doc => {
-				cur_frm.doc.grand_total -= flt(doc.grand_total);
-				cur_frm.doc.net_total -= flt(doc.net_total);
-				cur_frm.doc.total_quantity -= flt(doc.total_qty);
-				refresh_payments(doc, cur_frm, 1);
-				refresh_taxes(doc, cur_frm, 1);
-				refresh_fields(cur_frm);
-				set_html_data(cur_frm);
+				frm.doc.grand_total += flt(doc.grand_total);
+				frm.doc.net_total += flt(doc.net_total);
+				frm.doc.total_quantity += flt(doc.total_qty);
+				refresh_payments(doc, frm);
+				refresh_taxes(doc, frm);
+				refresh_fields(frm);
+				set_html_data(frm);
 			});
 		}
 	}
@@ -118,7 +127,7 @@
 frappe.ui.form.on('POS Closing Entry Detail', {
 	closing_amount: (frm, cdt, cdn) => {
 		const row = locals[cdt][cdn];
-		frappe.model.set_value(cdt, cdn, "difference", flt(row.expected_amount - row.closing_amount))
+		frappe.model.set_value(cdt, cdn, "difference", flt(row.expected_amount - row.closing_amount));
 	}
 })
 
@@ -142,28 +151,28 @@
 	})
 }
 
-function refresh_payments(d, frm, remove) {
+function refresh_payments(d, frm) {
 	d.payments.forEach(p => {
 		const payment = frm.doc.payment_reconciliation.find(pay => pay.mode_of_payment === p.mode_of_payment);
 		if (payment) {
-			if (!remove) payment.expected_amount += flt(p.amount);
-			else payment.expected_amount -= flt(p.amount);
+			payment.expected_amount += flt(p.amount);
+			payment.difference = payment.closing_amount - payment.expected_amount;
 		} else {
 			frm.add_child("payment_reconciliation", {
 				mode_of_payment: p.mode_of_payment,
 				opening_amount: 0,
-				expected_amount: p.amount
+				expected_amount: p.amount,
+				closing_amount: 0
 			})
 		}
 	})
 }
 
-function refresh_taxes(d, frm, remove) {
+function refresh_taxes(d, frm) {
 	d.taxes.forEach(t => {
 		const tax = frm.doc.taxes.find(tx => tx.account_head === t.account_head && tx.rate === t.rate);
 		if (tax) {
-			if (!remove) tax.amount += flt(t.tax_amount);
-			else tax.amount -= flt(t.tax_amount);
+			tax.amount += flt(t.tax_amount);
 		} else {
 			frm.add_child("taxes", {
 				account_head: t.account_head,
diff --git a/erpnext/assets/doctype/asset_category/asset_category.js b/erpnext/assets/doctype/asset_category/asset_category.js
index 74963c2..51ce157 100644
--- a/erpnext/assets/doctype/asset_category/asset_category.js
+++ b/erpnext/assets/doctype/asset_category/asset_category.js
@@ -4,7 +4,7 @@
 frappe.ui.form.on('Asset Category', {
 	onload: function(frm) {
 		frm.add_fetch('company_name', 'accumulated_depreciation_account', 'accumulated_depreciation_account');
-		frm.add_fetch('company_name', 'depreciation_expense_account', 'accumulated_depreciation_account');
+		frm.add_fetch('company_name', 'depreciation_expense_account', 'depreciation_expense_account');
 
 		frm.set_query('fixed_asset_account', 'accounts', function(doc, cdt, cdn) {
 			var d  = locals[cdt][cdn];
diff --git a/erpnext/projects/doctype/project/project.js b/erpnext/projects/doctype/project/project.js
index c5265e2..31460f6 100644
--- a/erpnext/projects/doctype/project/project.js
+++ b/erpnext/projects/doctype/project/project.js
@@ -87,7 +87,7 @@
 
 				frm.add_custom_button(__("Kanban Board"), () => {
 					frappe.call('erpnext.projects.doctype.project.project.create_kanban_board_if_not_exists', {
-						project: frm.doc.project_name
+						project: frm.doc.name
 					}).then(() => {
 						frappe.set_route('List', 'Task', 'Kanban', frm.doc.project_name);
 					});
diff --git a/erpnext/projects/doctype/project/project.py b/erpnext/projects/doctype/project/project.py
index 55c5149..c8fbe0b 100644
--- a/erpnext/projects/doctype/project/project.py
+++ b/erpnext/projects/doctype/project/project.py
@@ -523,8 +523,9 @@
 def create_kanban_board_if_not_exists(project):
 	from frappe.desk.doctype.kanban_board.kanban_board import quick_kanban_board
 
-	if not frappe.db.exists('Kanban Board', project):
-		quick_kanban_board('Task', project, 'status', project)
+	project = frappe.get_doc('Project', project)
+	if not frappe.db.exists('Kanban Board', project.project_name):
+		quick_kanban_board('Task', project.project_name, 'status', project.name)
 
 	return True
 
diff --git a/erpnext/projects/doctype/task/task.js b/erpnext/projects/doctype/task/task.js
index 6a9d2d1..3cd92ee 100644
--- a/erpnext/projects/doctype/task/task.js
+++ b/erpnext/projects/doctype/task/task.js
@@ -5,12 +5,6 @@
 
 frappe.ui.form.on("Task", {
 	setup: function (frm) {
-		frm.set_query("project", function () {
-			return {
-				query: "erpnext.projects.doctype.task.task.get_project"
-			}
-		});
-
 		frm.make_methods = {
 			'Timesheet': () => frappe.model.open_mapped_doc({
 				method: 'erpnext.projects.doctype.task.task.make_timesheet',
diff --git a/erpnext/regional/address_template/templates/united_states.html b/erpnext/regional/address_template/templates/united_states.html
index 089315e..77fce46 100644
--- a/erpnext/regional/address_template/templates/united_states.html
+++ b/erpnext/regional/address_template/templates/united_states.html
@@ -1,4 +1,4 @@
 {{ address_line1 }}<br>
 {% if address_line2 %}{{ address_line2 }}<br>{% endif -%}
 {{ city }}, {% if state %}{{ state }}{% endif -%}{% if pincode %} {{ pincode }}<br>{% endif -%}
-{% if country != "United States" %}{{ country|upper }}{% endif -%}
+{% if country != "United States" %}{{ country }}{% endif -%}
diff --git a/erpnext/regional/india/e_invoice/utils.py b/erpnext/regional/india/e_invoice/utils.py
index b4e7a88..70e6d07 100644
--- a/erpnext/regional/india/e_invoice/utils.py
+++ b/erpnext/regional/india/e_invoice/utils.py
@@ -43,8 +43,9 @@
 	invalid_supply_type = doc.get('gst_category') not in ['Registered Regular', 'SEZ', 'Overseas', 'Deemed Export']
 	company_transaction = doc.get('billing_address_gstin') == doc.get('company_gstin')
 	no_taxes_applied = not doc.get('taxes')
+	has_non_gst_item = any(d for d in doc.get('items') if d.get('is_non_gst'))
 
-	if invalid_company or invalid_supply_type or company_transaction or no_taxes_applied:
+	if invalid_company or invalid_supply_type or company_transaction or no_taxes_applied or has_non_gst_item:
 		return False
 
 	return True
diff --git a/erpnext/stock/dashboard/item_dashboard.js b/erpnext/stock/dashboard/item_dashboard.js
index 933ca8a..db05739 100644
--- a/erpnext/stock/dashboard/item_dashboard.js
+++ b/erpnext/stock/dashboard/item_dashboard.js
@@ -230,6 +230,7 @@
 		},
 		],
 	});
+	var submitted = false;
 	dialog.show();
 	dialog.get_field('item_code').set_input(item);
 
@@ -253,6 +254,7 @@
 	}
 
 	dialog.set_primary_action(__('Submit'), function () {
+		if(submitted) return;
 		var values = dialog.get_values();
 		if (!values) {
 			return;
@@ -265,6 +267,7 @@
 			frappe.msgprint(__('Source and target warehouse must be different'));
 		}
 
+		submitted = true;
 		frappe.call({
 			method: 'erpnext.stock.doctype.stock_entry.stock_entry_utils.make_stock_entry',
 			args: values,
diff --git a/erpnext/stock/doctype/landed_cost_taxes_and_charges/landed_cost_taxes_and_charges.json b/erpnext/stock/doctype/landed_cost_taxes_and_charges/landed_cost_taxes_and_charges.json
index 4fcdb4c..9c59c13 100644
--- a/erpnext/stock/doctype/landed_cost_taxes_and_charges/landed_cost_taxes_and_charges.json
+++ b/erpnext/stock/doctype/landed_cost_taxes_and_charges/landed_cost_taxes_and_charges.json
@@ -10,8 +10,8 @@
   "exchange_rate",
   "description",
   "col_break3",
-  "base_amount",
-  "amount"
+  "amount",
+  "base_amount"
  ],
  "fields": [
   {
@@ -59,7 +59,7 @@
   {
    "fieldname": "base_amount",
    "fieldtype": "Currency",
-   "label": "Base Amount",
+   "label": "Amount (Company Currency)",
    "options": "Company:company:default_currency",
    "read_only": 1
   }
@@ -67,7 +67,7 @@
  "index_web_pages_for_search": 1,
  "istable": 1,
  "links": [],
- "modified": "2020-12-26 01:07:23.233604",
+ "modified": "2021-05-17 13:57:10.807980",
  "modified_by": "Administrator",
  "module": "Stock",
  "name": "Landed Cost Taxes and Charges",