Problem running workflow. Please resolve outstanding issues before you activate it

I am having the same issue and not seeing any icons or error tryangles beside the workflow … i am new to this n8n and dont have a great understanding but would like further help in this as i am trying to utilize the Auto Social Media Posts AI Agent and i have everything connected…
Please help

these are the steps I have followed -https://www.youtube.com/watch?v=r2bxV2CHu5U

now i have tried to exacute workflow and it shows this error “ Problem running workflow

Please resolve outstanding issues before you activate it”

Thanks

HERE IS MY WORKFLOW :