[Pharo-users] can't debug TinyBlog in the Pharo MOOC

[iu136 via Pharo-users]

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hi guys
I'm following the Pharo MOOC and I'm at Week 4. the other day, I was trying
to implement TinyBlog: Data Persistency using Voyage and Mongo, when I tried
to compile the code, I've got an Error. the title of Error says:
"MessageNotUnderstood: receiver of "save:" is nil", and it refers to
TBMBlog>>writeBlogPost.

TBMBlog>>writeBlogPost: aTBMPost
    posts add: aTBMPost.
    aTBMPost save.
    self save .

thanks for your answers!



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