Hello @Cast Informatica S.A.
Thank you for reaching out.
analyzing the errors returned in your integrity checker, I believe there are data integrity issues in your database due to a null issue key in your JIRA, however, it's hard to troubleshoot what might be causing it.
I suggest you check in the documentation below if the error you are facing in the Atlassian.logs are compatible with the ones informed and do the suggested steps to get it fixed:
Please, let me know if that helps.
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