Why am I receiving Microsoft O365 Email Add-on for Splunk App - Python error?

[robayers]

Can anyone help with these errors? Clicking Configuration brings this error.

Configuration page failed to load, the server reported internal errors which may indicate you do not have access to this page.

Error: Request failed with status code 500

ERR0002

Then, this occurs when I try and configure a new input, selecting either option, O365 Email Groups, or O365 email.    

Error response received from server: Unexpected error "<class 'splunktaucclib.rest_handler.error.RestError'>" from python handler: "REST Error [500]: Internal Server Error -- Traceback (most recent call last): File "/opt/splunk/etc/apps/TA_microsoft_o365_email_add_on_for_splunk/bin/ta_microsoft_o365_email_add_on_for_splunk/aob_py3/splunktaucclib/rest_handler/handler.py", line 124, in wrapper for name, data, acl in meth(self, *args, **kwargs): File "/opt/splunk/etc/apps/TA_microsoft_o365_email_add_on_for_splunk/bin/ta_microsoft_o365_email_add_on_for_splunk/aob_py3/splunktaucclib/rest_handler/handler.py", line 345, in _format_all_response self._encrypt_raw_credentials(cont["entry"]) File "/opt/splunk/etc/apps/TA_microsoft_o365_email_add_on_for_splunk/bin/ta_microsoft_o365_email_add_on_for_splunk/aob_py3/splunktaucclib/rest_handler/handler.py", line 375, in _encrypt_raw_credentials change_list = rest_credentials.decrypt_all(data) File "/opt/splunk/etc/apps/TA_microsoft_o365_email_add_on_for_splunk/bin/ta_microsoft_o365_email_add_on_for_splunk/aob_py3/splunktaucclib/rest_handler/credentials.py", line 293, in decrypt_all all_passwords = credential_manager._get_all_passwords() File "/opt/splunk/etc/apps/TA_microsoft_o365_email_add_on_for_splunk/bin/ta_microsoft_o365_email_add_on_for_splunk/aob_py3/solnlib/utils.py", line 128, in wrapper return func(*args, **kwargs) File "/opt/splunk/etc/apps/TA_microsoft_o365_email_add_on_for_splunk/bin/ta_microsoft_o365_email_add_on_for_splunk/aob_py3/solnlib/credentials.py", line 281, in _get_all_passwords clear_password += field_clear[index] TypeError: can only concatenate str (not "NoneType") to str ". See splunkd.log/python.log for more details.

[mistydennis]

I'm having the same issue with a different app, wondering if anyone has found a solution to this.