Error message

Hello When i want to go on IMPUTATIONS i've got en error message and on the log this :

2018-01-12 14:21:50.883 ===== TRACE ===== ERROR - check Cron::Import() - is not a directory
2018-01-12 14:22:20.909 ===== TRACE ===== ERROR - check Cron::Import() - is not a directory
2018-01-12 14:22:50.933 ===== TRACE ===== ERROR - check Cron::Import() - is not a directory
2018-01-12 14:23:21.011 ===== TRACE ===== ERROR - check Cron::Import() - is not a directory
2018-01-12 14:23:51.100 ===== TRACE ===== ERROR - check Cron::Import() - is not a directory
2018-01-12 14:24:21.165 ===== TRACE ===== ERROR - check Cron::Import() - is not a directory
2018-01-12 14:24:51.210 ===== TRACE ===== ERROR - check Cron::Import() - is not a directory
2018-01-12 14:25:21.236 ===== TRACE ===== ERROR - check Cron::Import() - is not a directory
2018-01-12 14:25:51.263 ===== TRACE ===== ERROR - check Cron::Import() - is not a directory
2018-01-12 14:26:21.290 ===== TRACE ===== ERROR - check Cron::Import() - is not a directory
2018-01-12 14:26:21.328 ***** ERROR ***** [V6.5.2] ERROR *****
2018-01-12 14:26:21.330 ***** ERROR ***** [V6.5.2] on file 'G:\WAMP64\www\projeqtor\model\ImapMailbox.php' at line (82)
2018-01-12 14:26:21.331 ***** ERROR ***** [V6.5.2] cause = imap_open(): Couldn't open stream mail.ch-beaune.fr
2018-01-12 14:26:21.344 ===== TRACE ===== Cron::run() - Error on checkEmails()
2018-01-12 14:26:51.377 ===== TRACE ===== ERROR - check Cron::Import() - is not a directory

when i test my email it's good
When i am login on admin i can go to IMPUTATIONS

How can i repair ?

Thanks