Upgrade issue from 7.8 to 7.10

OS : Ubuntu 18.04
PHP : 7.2
Mysql : 5.7

After upgrade , campaign seems to be stuck, this error message at suitecrm.log

A language key does not found: [ERR_FIELD_FROM_NAME_IS_NOT_SET]

This is where it is defined:

modules/Emails/language/en_us.lang.php:399:    'ERR_FIELD_FROM_NAME_IS_NOT_SET' => 'From name is not set.',

Do you have that file, with that value?

Do you have another file overriding it in custom/modules/Emails/language/en_us.lang.php?

No custom language exists there and above variable exists already in modules/Emails/language… what’s wrong?

Try some more rebuilds from Admin / Repair. Not just the QR & R, but also others (languages, javascript, etc)

Oh and check file permissions on that file.

I have same issue, file permissions are ok.

This issue continues on. I too have this issue.

I just discovered I have the same problem as well. I have a campaign which was slow in sending out emails (like couldn’t send them at all then all of a sudden a few would go, then nothing for hours, then a few more would run). There was notihing wrong with CRON, that was firing ok. When I looked in the log file, I came across this same error as well. PHP7.2 is the same for me on 7.10.25

If somebody can get a stack trace of this error, that would be quite helpful.