Can't call method "path"

[D Kelmi]

  Hello!
  After upgrading to 4.31.6 i'm receive the following error sometimes
  Can't call method "path" on an undefined value at /opt/MailScanner/lib/MailScanner/SweepContent.pm line 387.
  As result, MailScanner crash and messages not delivery from in to out
  queue. MailScanner used with Qmail and ClamAV. If more info needs
  about my config - ask.

  Also, about Qmail support - how i understand, in ConfigDefs.pl was missed two lines:
  qmailhashdirectorynumber = QmailHashDirectoryNumber in section [Translation,Translation]
  QmailHashDirectoryNumber   23 in section [Simple,Number]

  And also, some troubles with ClamAV - it's not working with me
  without setting env "TMPDIR" to path of temporary dir. Now i'm set
  this env in check_mailscanner, but may be include definition of this
  env in MailScanner code?

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