The error message you're seeing indicates that the Q&A platform you're using (Question2Answer) encountered a fatal error while trying to send a reset password email via Gmail's SMTP service. Here are a few things you can check to troubleshoot the problem:
Welcome to the Q&A site for Question2Answer.
If you have a question about Q2A, please ask here, in English.
To report a bug, please create a new issue on Github or ask a question here with the bug tag.
If you just want to try Q2A, please use the demo site.