I am trying to call a contract function deployed in Ganache. I am pretty sure the contract is deployed because I can transact() and work with other functions. But when I call() it, I get this error:

Could not transact with/call contract function, is contract deployed correctly and chain synced?

this is my function call:

 updated_card = magic_ideas.functions.get_card('731759').call()

Previously, I have to "deploy an exam" with this code and it works correctly:

 t_hash1 = magic_ideas.functions.new_card('title', 'example_text', 'www.card.com', '731759').transact()

I get a t_hash1. Then when I try to get_card using .call() I get the error. What am I missing?


This is the contract declaration:

magic_ideas = w3.eth.contract(address="0x246eCb1dA50199FD7FcC20Ad08C617C52e34b128", abi=abi)

The abi is a copy & paste from remix.

  • 1
    I am also having the same issue.
    – Njabulo
    Commented Mar 2, 2020 at 10:47
  • 1
    Would help to answer your question if one would know the full source code needed to understand the problem and then the error message 🙌 Commented Aug 15, 2020 at 9:50
  • @MikkoOhtamaa What part of the code do you think is missing? the connection is pretty straightforward ` w3 = Web3(Web3.HTTPProvider(''))` . I'll add the contract declaration, if I need to add something else, let me know and I'll add it. Commented Aug 15, 2020 at 16:45
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    Suggest replicating the problem in a small code base so you can post the complete source code and people can get to the bottom of it. Commented Aug 16, 2020 at 2:04
  • 2
    Please post a compelte source code for a repeatable problem, so we do not need to guess what goes to variables and such. Then we can help you. Commented Aug 16, 2020 at 20:42

2 Answers 2



updated_card = magic_ideas.functions.get_card('731759').transact()

instead of

updated_card = magic_ideas.functions.get_card('731759').call()


I found that calling the contract function first works. This is supposed to clone the contract function (NOT the contract) and return a copy, but it also corrects the args field. I believe this only works if there are zero arguments, however.


updated_card = magic_ideas.functions.get_card('731759')().call()

Note the extra set of parenthesis before .call().

  • Thank you. This helped me and worked for me. Without the extra set of parentheses, this was not working. Commented May 29, 2022 at 22:57

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