fix: get_doc to avoid modified error
diff --git a/erpnext/projects/doctype/project/project.py b/erpnext/projects/doctype/project/project.py
index 2cdfb7a..9713460 100644
--- a/erpnext/projects/doctype/project/project.py
+++ b/erpnext/projects/doctype/project/project.py
@@ -81,27 +81,28 @@
 	def dependency_mapping(self, template_tasks, project_tasks):
 		for template_task in template_tasks:
 			project_task = list(filter(lambda x: x.subject == template_task.subject, project_tasks))[0]
-			if template_task.get("depends_on") and not project_task.get("depends_on"):
-				self.check_depends_on_value(template_task, project_task, project_tasks)
-			if template_task.get("parent_task") and not project_task.get("parent_task"):
-				self.check_for_parent_tasks(template_task, project_task, project_tasks)
+			project_task = frappe.get_doc("Task", project_task.name)
+			self.check_depends_on_value(template_task, project_task, project_tasks)
+			self.check_for_parent_tasks(template_task, project_task, project_tasks)
 
 	def check_depends_on_value(self, template_task, project_task, project_tasks):
-		for child_task in template_task.get("depends_on"):
-			child_task_subject = frappe.db.get_value("Task", child_task.task, "subject")
-			corresponding_project_task = list(filter(lambda x: x.subject == child_task_subject, project_tasks))
-			if len(corresponding_project_task):
-				project_task.append("depends_on",{
-					"task": corresponding_project_task[0].name
-				})
-				project_task.save()
+		if template_task.get("depends_on") and not project_task.get("depends_on"):
+			for child_task in template_task.get("depends_on"):
+				child_task_subject = frappe.db.get_value("Task", child_task.task, "subject")
+				corresponding_project_task = list(filter(lambda x: x.subject == child_task_subject, project_tasks))
+				if len(corresponding_project_task):
+					project_task.append("depends_on",{
+						"task": corresponding_project_task[0].name
+					})
+					project_task.save()
 
 	def check_for_parent_tasks(self, template_task, project_task, project_tasks):
-		parent_task_subject = frappe.db.get_value("Task", template_task.get("parent_task"), "subject")
-		corresponding_project_task = list(filter(lambda x: x.subject == parent_task_subject, project_tasks))
-		if len(corresponding_project_task):
-			project_task.parent_task = corresponding_project_task[0].name
-			project_task.save()
+		if template_task.get("parent_task") and not project_task.get("parent_task"):
+			parent_task_subject = frappe.db.get_value("Task", template_task.get("parent_task"), "subject")
+			corresponding_project_task = list(filter(lambda x: x.subject == parent_task_subject, project_tasks))
+			if len(corresponding_project_task):
+				project_task.parent_task = corresponding_project_task[0].name
+				project_task.save()
 
 	def is_row_updated(self, row, existing_task_data, fields):
 		if self.get("__islocal") or not existing_task_data: return True
diff --git a/erpnext/projects/doctype/project/test_project.py b/erpnext/projects/doctype/project/test_project.py
index 1d2980c..d77b14c 100644
--- a/erpnext/projects/doctype/project/test_project.py
+++ b/erpnext/projects/doctype/project/test_project.py
@@ -52,7 +52,7 @@
 
 		template = make_project_template("Test Project Template  - Tasks with Parent-Child Relation", [task1, task2, task3])
 		project = get_project(project_name, template)
-		tasks = frappe.get_all('Task', ['subject','exp_end_date','depends_on_tasks', 'name'], dict(project=project.name), order_by='creation asc')
+		tasks = frappe.get_all('Task', ['subject','exp_end_date','depends_on_tasks', 'name', 'parent_task'], dict(project=project.name), order_by='creation asc')
 
 		self.assertEqual(tasks[0].subject, 'Test Template Task Parent')
 		self.assertEqual(getdate(tasks[0].exp_end_date), calculate_end_date(project, 1, 1))