Error while setting up dropbox integration

I am trying to set up the my dropbox settings as per the documentation provided. after adding Access key and Access Secret, when I click on Allow Dropbox Access I get an error which is as bellow. Can anyone suggest me solution?

Traceback (most recent call last):
File “/home/frappe/frappe-bench/apps/frappe/frappe/”, line 56, in application
response = frappe.handler.handle()
File “/home/frappe/frappe-bench/apps/frappe/frappe/”, line 21, in handle
data = execute_cmd(cmd)
File “/home/frappe/frappe-bench/apps/frappe/frappe/”, line 52, in execute_cmd
return, **frappe.form_dict)
File “/home/frappe/frappe-bench/apps/frappe/frappe/”, line 913, in call
return fn(*args, **newargs)
File “/home/frappe/frappe-bench/apps/frappe/frappe/integrations/doctype/dropbox_settings/”, line 221, in get_dropbox_authorize_url
app_details = get_dropbox_settings(redirect_uri=True)
File “/home/frappe/frappe-bench/apps/frappe/frappe/integrations/doctype/dropbox_settings/”, line 196, in get_dropbox_settings
+ ‘/api/method/dropbox_erpnext_broker.www.setup_dropbox.generate_dropbox_access_token’,
TypeError: unsupported operand type(s) for +: ‘NoneType’ and ‘unicode’


It seems this last argument is null and you must set that value?


kolate_sambhaji’s video shows the steps to follow Setup dropbox backup [User Manual] - #8 by Raghuzor

good luck

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Thanks for reply, I figured out it needs to save first and then we have to click button.

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