[Fix] Heatmap issue in the project

erpnext/projects/doctype/project/project.py

@@ -266,6 +266,7 @@ class Project(Document):
 					task_doc.append('depends_on', {"task": dt_name})
 				task_doc.save()
 
+@frappe.whitelist()
 def get_timeline_data(doctype, name):
 	'''Return timeline for attendance'''
 	return dict(frappe.db.sql('''select unix_timestamp(from_time), count(*)

erpnext/projects/doctype/project/project_dashboard.py

@@ -4,6 +4,7 @@ def get_data():
 	return {
 		'heatmap': True,
 		'heatmap_message': _('This is based on the Time Sheets created against this project'),
+		'method' : 'erpnext.projects.doctype.project.project.get_timeline_data',
 		'fieldname': 'project',
 		'transactions': [
 			{