Convert image to base64 before sending Item to sync

erpnext/hub_node/data_migration_mapping/item_to_hub_item/__init__.py

@@ -0,0 +1,19 @@
+import io, base64, urllib, os
+
+def pre_process(doc):
+
+	file_path = doc.image
+	file_name = os.path.basename(file_path)
+
+	if file_path.startswith('http'):
+		url = file_path
+		file_path = os.path.join('/tmp', file_name)
+		urllib.urlretrieve(url, file_path)
+
+	with io.open(file_path, 'rb') as f:
+		doc.image = base64.b64encode(f.read())
+
+	doc.image_file_name = file_name
+
+	return doc
+