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FAQ - technical issues
Technical

AttributeError: ‘CertificateBatchHandler’ object has no attribute ‘certificates_to_issue’ Solution: Error: with cert_issuer -c conf.ini(AttributeError: ‘CertificateBatchHandler’ object has no attribute 'certificates_t…

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Welcome to the Blockcerts community
1 5924 March 10, 2017
Blockchain-based certificate...useless?
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11 8148 August 3, 2022
Cert-tools Error
Support
5 417 July 15, 2022
Cert-tools error: AttributeError: 'str' object has no attribute 'isoformat'. Did you mean: 'format'?
6 113 July 15, 2022
Error with cert-verifier
Technical
2 70 July 13, 2022
Wallet Verification Ethereum Testnet Error
Support
4 65 July 13, 2022
Wallet certificates
Support
2 54 July 13, 2022
Error installing Cert-Issuer coincurve
Support
0 47 July 12, 2022
Cert-Tools Help
Support
8 729 July 12, 2022
Error: Issue the certificates on the blockchain
Technical
1 522 July 11, 2022
Error with cert issuer - ethereum
Technical
2 850 November 14, 2018
The cert-issuer failed while building docker image
Support
1 68 July 6, 2022
Ethereum announced the testnet Ropsten would be closed in Q4 2022
Support
3 134 July 5, 2022
ReferenceError: self is not defined
Technical
3 82 June 27, 2022
Is blockcerts.org related with Blockcerts.jp?
1 90 June 27, 2022
(V3) Verifier: I got an error "Buffer is not defined"
Support
1 77 June 21, 2022
How to convert my ETH wallet address into a valid DID format
Support
2 114 June 20, 2022
Error: with cert_issuer -c conf.ini(AttributeError: ‘CertificateBatchHandler’ object has no attribute 'certificates_to_issue’)
Technical
2 99 June 15, 2022
Blockcerts issued on Ethereum network
Technical
2 111 June 15, 2022
ModuleNotFoundError: No module named 'ethereum'
Technical
1 875 May 31, 2022
Blockcerts aplicados al sistema educativo
0 108 May 19, 2022
Blockcerts Implementation "guidance"
Community
0 138 May 19, 2022
Blockcerts Implementation
Support
0 110 May 19, 2022
Flask app Cert-Issuer for Ethereum
Technical
3 400 May 18, 2022
Error Installing Cert-Tools and Cert-Issuer in a Single Docker container. Getting Coincurve Error
Technical
2 109 May 18, 2022
Could not retrieve a JSON-LD document from the URL
Technical
4 439 April 30, 2022
Getting Invalid Bitcoin address error while executing "bitcoin-cli sendtoaddress $issuer 5" command
Technical
0 113 April 28, 2022
Problem installing blockcerts cert-issuer
Community
3 259 April 25, 2022
Adding support for hashlink images
Technical
0 125 April 6, 2022