Previously debug html attachments had screenshots and information about reason for test failure, but currently they have only mock API logs (example - https://flowcrypt.semaphoreci.com/jobs/0be03fb0-c584-4943-b6d5-4164e2a94ce3/artifacts)
Issue probably appeared after updating to Puppeteer 21.0.0, as testFailSingleAttemptDebugHtml fails with error Error: Requesting main frame too early!. It works well in Puppeteer 20.9.0