401 unauthorized issue on pull form

We have shield module enabled & basic_auth is enabled for OAuth authorization method. I searched a lot about the conflict of shield & basic_auth but I am not getting any feasible solution. I tried shield protection from .htaccess (by disabling shield module) but still getting 401 error on pull form. After enabling basic_suth sometimes gives access denied on all page.

I am looking for a workaround which will allow https://serversite.com/entity_share to access on pull form at client site. Any project specific patch is also fine. I just want to skip basic authorization for https://serversite.com/entity_share path & on rest of the pages shield module should work as expected.

Client error: `GET https://serversite.com/entity_share` resulted in a `401 Unauthorized`

I tried a solution to add a url like below in remote websites but that is not working for me:
https://username:password@serversite.com/entity_share