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jgorset / facebook-messenger

Definitely the best way to make Bots on Facebook Messenger with Ruby
MIT License
962 stars 211 forks source link

`hexdigest': no implicit conversion of nil into String (TypeError) #266

Closed LockeZz closed 3 years ago

LockeZz commented 3 years ago

Dear all, Im quite new to rails so please bear with me.

I have been trying to work out in setting up facebook graph api with devise, koala, omniauth and facebook messenger. Due to the facebook only accept one callback url, I was trying to find a way to do the liveupdate part and send the params to facebook-messenger so that the chatbot will work. It seems that I was stucked with this recent error as mention in the title which apparently came from here:

/home/hfpang/.rvm/gems/ruby-3.0.1/gems/facebook-messenger-2.0.1/lib/facebook/messenger/configuration/app_secret_proof_calculator.rb:7:in `hexdigest': no implicit conversion of nil into String (TypeError)

Took me awhile to find the source though, at first it was pointed to the part where "message.reply(text: "test message')" in the heroku logs.

Would appreciate for any helpful advice.

LockeZz commented 3 years ago

okay. I manage to find the problem. It seems that the environment variable in the library was set to ENV['APP_SECRET'], which required me to follow the same definition as it. Hope this hellp whoever encounter similar problem as mine