diff --git a/erpnext/accounts/doctype/sales_invoice/sales_invoice.py b/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
index 3dab0540144..71f2e120ccf 100644
--- a/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
+++ b/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
@@ -1619,22 +1619,23 @@ def update_multi_mode_option(doc, pos_profile):
 
 	for pos_payment_method in pos_profile.get('payments'):
 		pos_payment_method = pos_payment_method.as_dict()
-		
+
 		payment_mode = get_mode_of_payment_info(pos_payment_method.mode_of_payment, doc.company)
-		payment_mode[0].default = pos_payment_method.default
-		append_payment(payment_mode[0])
+		if payment_mode:
+			payment_mode[0].default = pos_payment_method.default
+			append_payment(payment_mode[0])
 
 def get_all_mode_of_payments(doc):
 	return frappe.db.sql("""
-		select mpa.default_account, mpa.parent, mp.type as type 
-		from `tabMode of Payment Account` mpa,`tabMode of Payment` mp 
+		select mpa.default_account, mpa.parent, mp.type as type
+		from `tabMode of Payment Account` mpa,`tabMode of Payment` mp
 		where mpa.parent = mp.name and mpa.company = %(company)s and mp.enabled = 1""",
 	{'company': doc.company}, as_dict=1)
 
 def get_mode_of_payment_info(mode_of_payment, company):
 	return frappe.db.sql("""
-		select mpa.default_account, mpa.parent, mp.type as type 
-		from `tabMode of Payment Account` mpa,`tabMode of Payment` mp 
+		select mpa.default_account, mpa.parent, mp.type as type
+		from `tabMode of Payment Account` mpa,`tabMode of Payment` mp
 		where mpa.parent = mp.name and mpa.company = %s and mp.enabled = 1 and mp.name = %s""",
 	(company, mode_of_payment), as_dict=1)
 
diff --git a/erpnext/hr/doctype/leave_allocation/leave_allocation.js b/erpnext/hr/doctype/leave_allocation/leave_allocation.js
index 210a73cfe55..e9e129cdd24 100755
--- a/erpnext/hr/doctype/leave_allocation/leave_allocation.js
+++ b/erpnext/hr/doctype/leave_allocation/leave_allocation.js
@@ -5,20 +5,23 @@ cur_frm.add_fetch('employee','employee_name','employee_name');
 
 frappe.ui.form.on("Leave Allocation", {
 	onload: function(frm) {
+		// Ignore cancellation of doctype on cancel all.
+		frm.ignore_doctypes_on_cancel_all = ["Leave Ledger Entry"];
+
 		if(!frm.doc.from_date) frm.set_value("from_date", frappe.datetime.get_today());
 
 		frm.set_query("employee", function() {
 			return {
 				query: "erpnext.controllers.queries.employee_query"
-			}
+			};
 		});
 		frm.set_query("leave_type", function() {
 			return {
 				filters: {
 					is_lwp: 0
 				}
-			}
-		})
+			};
+		});
 	},
 
 	refresh: function(frm) {
diff --git a/erpnext/hr/doctype/leave_application/leave_application.js b/erpnext/hr/doctype/leave_application/leave_application.js
index 4001a455075..d62e418b17e 100755
--- a/erpnext/hr/doctype/leave_application/leave_application.js
+++ b/erpnext/hr/doctype/leave_application/leave_application.js
@@ -19,6 +19,10 @@ frappe.ui.form.on("Leave Application", {
 		frm.set_query("employee", erpnext.queries.employee);
 	},
 	onload: function(frm) {
+
+		// Ignore cancellation of doctype on cancel all.
+		frm.ignore_doctypes_on_cancel_all = ["Leave Ledger Entry"];
+
 		if (!frm.doc.posting_date) {
 			frm.set_value("posting_date", frappe.datetime.get_today());
 		}
diff --git a/erpnext/hr/doctype/leave_encashment/leave_encashment.js b/erpnext/hr/doctype/leave_encashment/leave_encashment.js
index 701c2f0f31f..71a34226da4 100644
--- a/erpnext/hr/doctype/leave_encashment/leave_encashment.js
+++ b/erpnext/hr/doctype/leave_encashment/leave_encashment.js
@@ -2,6 +2,10 @@
 // For license information, please see license.txt
 
 frappe.ui.form.on('Leave Encashment', {
+	onload: function(frm) {
+		// Ignore cancellation of doctype on cancel all.
+		frm.ignore_doctypes_on_cancel_all = ["Leave Ledger Entry"];
+	},
 	setup: function(frm) {
 		frm.set_query("leave_type", function() {
 			return {
@@ -33,7 +37,7 @@ frappe.ui.form.on('Leave Encashment', {
 				doc: frm.doc,
 				callback: function(r) {
 					frm.refresh_fields();
-					}
+				}
 			});
 		}
 	}
diff --git a/erpnext/www/support/index.html b/erpnext/www/support/index.html
index 93da503dbb0..12b4c2c0819 100644
--- a/erpnext/www/support/index.html
+++ b/erpnext/www/support/index.html
@@ -9,6 +9,33 @@
 			<p class="hero-subtitle">{{ greeting_subtitle }}</p>
 			{% endif %}
 		</div>
+		<div class="search-container">
+			<div class="website-search" id="search-container">
+				<div class="dropdown">
+					<div class="search-icon">
+						<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24"
+							fill="none"
+							stroke="currentColor" stroke-width="2" stroke-linecap="round"
+							stroke-linejoin="round"
+							class="feather feather-search">
+							<circle cx="11" cy="11" r="8"></circle>
+							<line x1="21" y1="21" x2="16.65" y2="16.65"></line>
+						</svg>
+					</div>
+					<input type="search" class="form-control" placeholder="Search the docs (Press ? to focus)" />
+					<div class="overflow-hidden shadow dropdown-menu w-100">
+					</div>
+				</div>
+			</div>
+			<button class="navbar-toggler" type="button"
+				data-toggle="collapse"
+				data-target="#navbarSupportedContent"
+				aria-controls="navbarSupportedContent"
+				aria-expanded="false"
+				aria-label="Toggle navigation">
+				<span class="navbar-toggler-icon"></span>
+			</button>
+		</div>
 	</div>
 </section>
 
@@ -54,5 +81,21 @@
 	</div>
 </section>
 {% endif %}
+{% endblock %}
 
-{% endblock %}
\ No newline at end of file
+{%- block script -%}
+<script>
+	frappe.ready(() => {
+		frappe.setup_search('#search-container', 'kb');
+	});
+</script>
+{%- endblock -%}
+
+{%- block style -%}
+<style>
+	.search-container {
+		margin-top: 1.2rem;
+		max-width: 500px;
+	}	
+</style>
+{%- endblock -%}