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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…

2 132 July 11, 2022
Welcome to the Blockcerts community
1 6039 March 10, 2017
Blockcerts V3 release
Standards
2 644 September 30, 2022
Status on BlockCerts usability
Community
1 55 September 12, 2022
How do I add the name to my certificate?
1 72 August 25, 2022
Blockchain-based certificate...useless?
Community
11 8379 August 3, 2022
Cert-tools Error
Support
5 455 July 15, 2022
Cert-tools error: AttributeError: 'str' object has no attribute 'isoformat'. Did you mean: 'format'?
6 230 July 15, 2022
Error with cert-verifier
Technical
2 113 July 13, 2022
Wallet Verification Ethereum Testnet Error
Support
4 125 July 13, 2022
Wallet certificates
Support
2 95 July 13, 2022
Error installing Cert-Issuer coincurve
Support
0 81 July 12, 2022
Cert-Tools Help
Support
8 769 July 12, 2022
Error: Issue the certificates on the blockchain
Technical
1 568 July 11, 2022
Error with cert issuer - ethereum
Technical
2 890 November 14, 2018
The cert-issuer failed while building docker image
Support
1 113 July 6, 2022
Ethereum announced the testnet Ropsten would be closed in Q4 2022
Support
3 189 July 5, 2022
ReferenceError: self is not defined
Technical
3 156 June 27, 2022
Is blockcerts.org related with Blockcerts.jp?
1 129 June 27, 2022
(V3) Verifier: I got an error "Buffer is not defined"
Support
1 117 June 21, 2022
How to convert my ETH wallet address into a valid DID format
Support
2 177 June 20, 2022
Error: with cert_issuer -c conf.ini(AttributeError: ‘CertificateBatchHandler’ object has no attribute 'certificates_to_issue’)
Technical
2 149 June 15, 2022
Blockcerts issued on Ethereum network
Technical
2 167 June 15, 2022
ModuleNotFoundError: No module named 'ethereum'
Technical
1 1014 May 31, 2022
Blockcerts aplicados al sistema educativo
0 139 May 19, 2022
Blockcerts Implementation "guidance"
Community
0 183 May 19, 2022
Blockcerts Implementation
Support
0 150 May 19, 2022
Flask app Cert-Issuer for Ethereum
Technical
3 440 May 18, 2022
Error Installing Cert-Tools and Cert-Issuer in a Single Docker container. Getting Coincurve Error
Technical
2 153 May 18, 2022
Could not retrieve a JSON-LD document from the URL
Technical
4 473 April 30, 2022