Espo.WARNING: A non-numeric value encountered

[rob209]

I set up cronjob and noticed that every minute many lines like these fill log file

[2017-01-30 11:16:56] Espo.WARNING: E_WARNING: A non-numeric value encountered {"code":2,"message":"A non-numeric value encountered","file":"/vendor/mtdowling/cron-expression/src/Cron/AbstractField.php","line":94,"context":{"dateValue":"16","value":"/2","parts":["","2"],"stepSize":"2","range":[""],"offset":"","to":"16","i":0}} []
[2017-01-30 11:16:56] Espo.WARNING: E_WARNING: A non-numeric value encountered {"code":2,"message":"A non-numeric value encountered","file":"/vendor/mtdowling/cron-expression/src/Cron/AbstractField.php","line":94,"context":{"dateValue":"15","value":"/2","parts":["","2"],"stepSize":"2","range":[""],"offset":"","to":"15","i":0}} []
[2017-01-30 11:16:56] Espo.WARNING: E_WARNING: A non-numeric value encountered {"code":2,"message":"A non-numeric value encountered","file":"/vendor/mtdowling/cron-expression/src/Cron/AbstractField.php","line":94,"context":{"dateValue":"14","value":"/2","parts":["","2"],"stepSize":"2","range":[""],"offset":"","to":"14","i":0}} []
[2017-01-30 11:16:56] Espo.WARNING: E_WARNING: A non-numeric value encountered {"code":2,"message":"A non-numeric value encountered","file":"/vendor/mtdowling/cron-expression/src/Cron/AbstractField.php","line":94,"context":{"dateValue":"16","value":"/2","parts":["","2"],"stepSize":"2","range":[""],"offset":"","to":"16","i":0}} []

How to fix? Thanks!

[tanya]

Hello
Check all Scheduling of your active Scheduled Jobs (are they valid or not)

[rob209]

Hello, I have never visited the scheduled jobs setting before, so I don't know how to do this

Auth Token Control              Active    */6 * * * *     
Check Group Email Accounts      Active    */4 * * * *     
Check Personal Email Accounts   Active    */5 * * * *     
Clean-up                        Active    1 1 * * 0     
Control Knowledge Base          Active    10 1 * * *     
Send Email Notifications        Active    /2 * * * *     
Send Email Reminders            Active    */2 * * * *     
Send Mass Emails                Active    15 * * * *

I viewed each of them and it says "success" the last time it was run

[tanya]

Copy scheduling from Send Reminders to Send Notifications (or just add * to Send Notifications)