Sending stuck after first delivery

[HSR Group]

Hi,
since 2 days I'm experiencing a weird issue.
When a delivery is running, it stops after sending the first email
SMTP works fine, all is OK. I also tried to deactivate/activate the Newletter Plugin or create a new newsletter.

I noticed that on the PARAMETERS BOX there is a value which I don't underdstan:

>> Engine lock 1727245511

In other website I use the same plugin and the Engine lock is ZERO.

On LOGS I have this:
25-09-2024 08:25:08 - FATAL - 8.5.1 - 11,6 MB/256 MB - [cron] > Delivery engine lock already set: can be due to concurrente executions or fatal error during delivery

Can anyone help me please?
Thank you very much

[Michael]

Hello,

I'll have this discussed with our developers, I'll get back to you as soon as possible.

Michael

[HSR Group]

Hi Michael,
thank you so very much.
Please let me know asap.

Thank you.
Kind Regards
S.

[Michael]

Hello,

try to enable debug mode in Settings > General > Advances and see if it catches any more specific php error. You'd need to have a newsletter sending and wait for cron to run (approx every 5 mins). Get back to me with any results.

Michael

[HSR Group]

Hi Michael,
thank you very much.

Here you can find the errors:

25-09-2024 14:24:01 - INFO - 8.5.1 - 11,8 MB/256 MB - [cron] > Newsletter::send> Start newsletter 35
25-09-2024 14:24:01 - DEBUG - 8.5.1 - 11,8 MB/256 MB - [cron] > Newsletter::send_setup> Setup delivery engine
25-09-2024 14:24:01 - DEBUG - 8.5.1 - 11,8 MB/256 MB - [cron] > Newsletter::get_send_speed> Computing delivery speed
25-09-2024 14:24:01 - DEBUG - 8.5.1 - 11,8 MB/256 MB - [cron] > Newsletter::get_send_speed> Speed set by mailer
25-09-2024 14:24:01 - DEBUG - 8.5.1 - 11,8 MB/256 MB - [cron] > Newsletter::get_send_speed> Speed: 12
25-09-2024 14:24:01 - DEBUG - 8.5.1 - 11,8 MB/256 MB - [cron] > Newsletter::send_setup> Max emails: 1
25-09-2024 14:24:01 - DEBUG - 8.5.1 - 11,8 MB/256 MB - [cron] > Newsletter::send_setup> Max time set to 285
25-09-2024 14:24:01 - DEBUG - 8.5.1 - 11,8 MB/256 MB - [cron] > Newsletter::send> Query: select * from wp_2_newsletter where status='C' and id>3 order by id limit 1
25-09-2024 14:24:01 - DEBUG - 8.5.1 - 11,8 MB/256 MB - [cron] > Newsletter::send> Loaded subscribers: 1
25-09-2024 14:24:01 - DEBUG - 8.5.1 - 11,8 MB/256 MB - [cron] > Newsletter::send> Delay set to 0
25-09-2024 14:24:01 - DEBUG - 8.5.1 - 11,8 MB/256 MB - [cron] > Newsletter::send> Processing user ID: 4
25-09-2024 14:29:45 - DEBUG - 8.5.1 - 11,8 MB/256 MB - [cron] > Newsletter::hook_newsletter> Start
25-09-2024 14:29:45 - FATAL - 8.5.1 - 11,8 MB/256 MB - [cron] > Delivery engine lock already set: can be due to concurrente executions or fatal error during delivery
25-09-2024 14:34:03 - DEBUG - 8.5.1 - 11,6 MB/256 MB - [cron] > Newsletter::hook_newsletter> Start
25-09-2024 14:34:03 - DEBUG - 8.5.1 - 11,7 MB/256 MB - [cron] > Newsletter::hook_newsletter> 1 newsletter to be processed
25-09-2024 14:34:03 - INFO - 8.5.1 - 11,7 MB/256 MB - [cron] > Newsletter::send> Start newsletter 35
25-09-2024 14:34:03 - DEBUG - 8.5.1 - 11,7 MB/256 MB - [cron] > Newsletter::send_setup> Setup delivery engine
25-09-2024 14:34:03 - DEBUG - 8.5.1 - 11,7 MB/256 MB - [cron] > Newsletter::get_send_speed> Computing delivery speed
25-09-2024 14:34:03 - DEBUG - 8.5.1 - 11,7 MB/256 MB - [cron] > Newsletter::get_send_speed> Speed set by mailer
25-09-2024 14:34:03 - DEBUG - 8.5.1 - 11,7 MB/256 MB - [cron] > Newsletter::get_send_speed> Speed: 12
25-09-2024 14:34:03 - DEBUG - 8.5.1 - 11,7 MB/256 MB - [cron] > Newsletter::send_setup> Max emails: 1
25-09-2024 14:34:03 - DEBUG - 8.5.1 - 11,7 MB/256 MB - [cron] > Newsletter::send_setup> Max time set to 285
25-09-2024 14:34:03 - DEBUG - 8.5.1 - 11,7 MB/256 MB - [cron] > Newsletter::send> Query: select * from wp_2_newsletter where status='C' and id>3 order by id limit 1
25-09-2024 14:34:03 - DEBUG - 8.5.1 - 11,7 MB/256 MB - [cron] > Newsletter::send> Loaded subscribers: 1
25-09-2024 14:34:03 - DEBUG - 8.5.1 - 11,7 MB/256 MB - [cron] > Newsletter::send> Delay set to 0
25-09-2024 14:34:03 - DEBUG - 8.5.1 - 11,7 MB/256 MB - [cron] > Newsletter::send> Processing user ID: 4
25-09-2024 14:39:57 - DEBUG - 8.5.1 - 11,8 MB/256 MB - [cron] > Newsletter::hook_newsletter> Start
25-09-2024 14:39:57 - FATAL - 8.5.1 - 11,8 MB/256 MB - [cron] > Delivery engine lock already set: can be due to concurrente executions or fatal error during delivery
25-09-2024 14:43:59 - DEBUG - 8.5.1 - 11,6 MB/256 MB - [cron] > Newsletter::hook_newsletter> Start
25-09-2024 14:43:59 - FATAL - 8.5.1 - 11,6 MB/256 MB - [cron] > Delivery engine lock already set: can be due to concurrente executions or fatal error during delivery

Here you can also download a few screnshots:

- https://ibb.co/2jxZPfG
- https://ibb.co/dbrvMRQ
- https://ibb.co/rZKpxyJ

Please let me know asap.
Thank you very much.
S.

[HSR Group]

Hi Michael,
after the newsletter latest update we did a few minutes ago, our problem is solved.
Thank you.
Kind regards
S.

[Michael]

Hello,

happy to hear that!

Michael

[Author]

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