Woocommerce Erpnext Connector error while integrating first time

I have the woocommerce erpnext connector developed by @lasalesi installed to erpnext. But I keep getting the below error while using woocommerce config for the first time. Kindly help with this as i am stuck now.

The error is as below:

Initially it is giving http 500 server error and then the error in the console below

Traceback (most recent call last):
File “/home/frappe/frappe-bench/apps/frappe/frappe/app.py”, line 64, in application
response = frappe.api.handle()
File “/home/frappe/frappe-bench/apps/frappe/frappe/api.py”, line 59, in handle
return frappe.handler.handle()
File “/home/frappe/frappe-bench/apps/frappe/frappe/handler.py”, line 24, in handle
data = execute_cmd(cmd)
File “/home/frappe/frappe-bench/apps/frappe/frappe/handler.py”, line 64, in execute_cmd
return frappe.call(method, **frappe.form_dict)
File “/home/frappe/frappe-bench/apps/frappe/frappe/init.py”, line 1064, in call
return fn(*args, **newargs)
File “/home/frappe/frappe-bench/apps/frappe/frappe/desk/form/save.py”, line 21, in savedocs
doc.save()
File “/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py”, line 273, in save
return self._save(*args, **kwargs)
File “/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py”, line 309, in _save
self.run_before_save_methods()
File “/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py”, line 896, in run_before_save_methods
self.run_method(“validate”)
File “/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py”, line 797, in run_method
out = Document.hook(fn)(self, *args, **kwargs)
File “/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py”, line 1073, in composer
return composed(self, method, *args, **kwargs)
File “/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py”, line 1056, in runner
add_to_return_value(self, fn(self, *args, **kwargs))
File “/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py”, line 791, in
fn = lambda self, *args, **kwargs: getattr(self, method)(*args, **kwargs)
File “/home/frappe/frappe-bench/apps/woocommerceconnector/woocommerceconnector/woocommerceconnector/doctype/woocommerce_config/woocommerce_config.py”, line 17, in validate
self.validate_access()
File “/home/frappe/frappe-bench/apps/woocommerceconnector/woocommerceconnector/woocommerceconnector/doctype/woocommerce_config/woocommerce_config.py”, line 27, in validate_access
“api_secret”: self.get_password(fieldname=‘api_secret’,raise_exception=False), “woocommerce_url”: self.woocommerce_url, “verify_ssl”: self.verify_ssl})
File “/home/frappe/frappe-bench/apps/woocommerceconnector/woocommerceconnector/woocommerce_requests.py”, line 61, in get_request
return get_request_request(path, settings).json()
File “/home/frappe/frappe-bench/apps/woocommerceconnector/woocommerceconnector/woocommerce_requests.py”, line 55, in get_request_request
message="{0}: {1}".format(r.url, r.json()),
File “/home/frappe/frappe-bench/env/lib/python3.6/site-packages/requests/models.py”, line 897, in json
return complexjson.loads(self.text, **kwargs)
File “/usr/lib/python3.6/json/init.py”, line 354, in loads
return _default_decoder.decode(s)
File “/usr/lib/python3.6/json/decoder.py”, line 339, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File “/usr/lib/python3.6/json/decoder.py”, line 357, in raw_decode
raise JSONDecodeError(“Expecting value”, s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)
request.js:355:14

I am thinking no one has an answer for this.