Bitwarden. An error has occurred. LetreErr
For that error you need to check your email settings, especially SMTP server.
In my case i had to update SMTP password for my gmail account with https://codeinteg.com/how-to-change-run-command-for-docker-container-732/
["SMTP_HOST=smtp.gmail.com","SMTP_SSL=true","SMTP_USERNAME=usernamegmail@gmail.com","DOMAIN=https://bitwarden.yourdomain.com","SIGNUPS_ALLOWED=false","SMTP_FROM=usrnamegmail@gmail.com","SMTP_PORT=587","SMTP_PASSWORD=xxxxxxxxxxxxxxx","LOG_FILE=/bw-data/bitwarden.log"