Error 100 OAuthexception Facebook auto post from gsheet to FB & insta


Hi Guys,

Apps Used Gsheet > Facebook > Insta

1. Gsheet webhook is receiving date successfully
2. Facebook : Facebook Pages : Create Page Photo not receiving data error occurring Attached is the Screenshot

Screenshot 2023-01-15 at 00.38.21.png

- This Oauthexception is creating a problem, I have checked facebook business integration section and allowed everything for this account, (I am an admin of the page)

-User has a admin rights to operate the page.

Can anyone please help I have checked youtube, forum everything and there isn't any solution to this.


Update: It's not working when Action event selected as : Create Page Photo only working the flow on Create Page Post. Whys that?