# Single e-mail stop working - Error 500
**URL:** https://forum.mautic.org/t/single-e-mail-stop-working-error-500/17469
**Category:** Product Support
**Created:** [December 18, 2020, 5:44pm UTC](https://forum.mautic.org/t/single-e-mail-stop-working-error-500/17469 "2020-12-18T17:44:16Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@rodrigooliveira](https://forum.mautic.org/u/rodrigooliveira)
#### Post date: [December 18, 2020, 5:44pm UTC](https://forum.mautic.org/t/single-e-mail-stop-working-error-500/17469/1 "2020-12-18T17:44:16Z")
**software**
My Mautic version is: **v3.0.2**
My PHP version is: **7.3.22-1** +ubuntu20.04.1+deb.sury.org+1
My problem is:
So, until yesterday my mautic was running perfectly (is about a month that I’m not having any kind of issue), everything was working really fine.
But today, when I tried to send a single e-mail through the contact field, I realized that stop working. The screen keeps loading forever, and the console of chrome shows an 500 (Internal Server Error) status.
I send e-mail almost every day through this feature 🙄.
These errors are showing in the log:
[2020-12-18 02:25:15] mautic.NOTICE: Doctrine\DBAL\Exception\ConnectionException: An exception occurred in driver: SQLSTATE[HY000] [2002] Connection refused (uncaught exception) at /var/www/html/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/AbstractMySQLDriver.php line 93 while running console command `mautic:segments:update`
[2020-12-18 02:25:15] mautic.NOTICE: Doctrine\DBAL\Exception\ConnectionException: An exception occurred in driver: SQLSTATE[HY000] [2002] Connection refused (uncaught exception) at /var/www/html/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/AbstractMySQLDriver.php line 93 while running console command `mautic:campaigns:trigger`
[2020-12-18 02:25:15] mautic.NOTICE: Doctrine\DBAL\Exception\ConnectionException: An exception occurred in driver: SQLSTATE[HY000] [2002] Connection refused (uncaught exception) at /var/www/html/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/AbstractMySQLDriver.php line 93 while running console command `mautic:reports:scheduler`
[2020-12-18 02:25:15] mautic.NOTICE: Doctrine\DBAL\Exception\ConnectionException: An exception occurred in driver: SQLSTATE[HY000] [2002] Connection refused (uncaught exception) at /var/www/html/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/AbstractMySQLDriver.php line 93 while running console command `mautic:import`
[2020-12-18 02:25:15] mautic.NOTICE: Doctrine\DBAL\Exception\ConnectionException: An exception occurred in driver: SQLSTATE[HY000] [2002] Connection refused (uncaught exception) at /var/www/html/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/AbstractMySQLDriver.php line 93 while running console command `mautic:campaigns:rebuild`
[2020-12-18 02:25:20] mautic.WARNING: Command `mautic:campaigns:rebuild` exited with status code 1
[2020-12-18 02:25:20] mautic.WARNING: Command `mautic:reports:scheduler` exited with status code 1
[2020-12-18 02:25:20] mautic.WARNING: Command `mautic:campaigns:trigger` exited with status code 1
[2020-12-18 02:25:20] mautic.WARNING: Command `mautic:segments:update` exited with status code 1
[2020-12-18 02:25:20] mautic.WARNING: Command `mautic:import` exited with status code 1
[2020-12-18 17:15:08] mautic.NOTICE: Doctrine\DBAL\Exception\ConnectionException: An exception occurred in driver: SQLSTATE[HY000] [2002] Connection refused (uncaught exception) at /var/www/html/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/AbstractMySQLDriver.php line 93 while running console command `mautic:reports:scheduler`
[2020-12-18 17:15:08] mautic.WARNING: Command `mautic:reports:scheduler` exited with status code 1
[2020-12-18 17:15:08] mautic.NOTICE: Doctrine\DBAL\Exception\ConnectionException: An exception occurred in driver: SQLSTATE[HY000] [2002] Connection refused (uncaught exception) at /var/www/html/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/AbstractMySQLDriver.php line 93 while running console command `mautic:import`
[2020-12-18 17:15:08] mautic.NOTICE: Doctrine\DBAL\Exception\ConnectionException: An exception occurred in driver: SQLSTATE[HY000] [2002] Connection refused (uncaught exception) at /var/www/html/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/AbstractMySQLDriver.php line 93 while running console command `mautic:social:monitoring`
[2020-12-18 17:15:08] mautic.WARNING: Command `mautic:import` exited with status code 1
[2020-12-18 17:15:08] mautic.NOTICE: Doctrine\DBAL\Exception\ConnectionException: An exception occurred in driver: SQLSTATE[HY000] [2002] Connection refused (uncaught exception) at /var/www/html/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/AbstractMySQLDriver.php line 93 while running console command `mautic:messages:send`
[2020-12-18 17:15:08] mautic.WARNING: Command `mautic:social:monitoring` exited with status code 1
[2020-12-18 17:15:08] mautic.WARNING: Command `mautic:messages:send` exited with status code 1
[2020-12-18 17:15:08] mautic.NOTICE: Doctrine\DBAL\Exception\ConnectionException: An exception occurred in driver: SQLSTATE[HY000] [2002] Connection refused (uncaught exception) at /var/www/html/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/AbstractMySQLDriver.php line 93 while running console command `mautic:broadcasts:send`
[2020-12-18 17:15:08] mautic.WARNING: Command `mautic:broadcasts:send` exited with status code 1
[2020-12-18 17:31:20] mautic.NOTICE: Doctrine\DBAL\Exception\ConnectionException: An exception occurred in driver: SQLSTATE[HY000] [2002] Connection refused (uncaught exception) at /var/www/html/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/AbstractMySQLDriver.php line 93 while running console command `mautic:reports:scheduler`
[2020-12-18 17:31:20] mautic.NOTICE: Doctrine\DBAL\Exception\ConnectionException: An exception occurred in driver: SQLSTATE[HY000] [2002] Connection refused (uncaught exception) at /var/www/html/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/AbstractMySQLDriver.php line 93 while running console command `mautic:import`
[2020-12-18 17:31:20] mautic.NOTICE: Doctrine\DBAL\Exception\ConnectionException: An exception occurred in driver: SQLSTATE[HY000] [2002] Connection refused (uncaught exception) at /var/www/html/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/AbstractMySQLDriver.php line 93 while running console command `mautic:social:monitoring`
[2020-12-18 17:31:20] mautic.WARNING: Command `mautic:import` exited with status code 1
[2020-12-18 17:31:20] mautic.WARNING: Command `mautic:social:monitoring` exited with status code 1
[2020-12-18 17:31:20] mautic.WARNING: Command `mautic:reports:scheduler` exited with status code 1
[2020-12-18 17:31:20] mautic.NOTICE: Doctrine\DBAL\Exception\ConnectionException: An exception occurred in driver: SQLSTATE[HY000] [2002] Connection refused (uncaught exception) at /var/www/html/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/AbstractMySQLDriver.php line 93 while running console command `mautic:messages:send`
[2020-12-18 17:31:20] mautic.WARNING: Command `mautic:messages:send` exited with status code 1
[2020-12-18 17:31:21] mautic.NOTICE: Doctrine\DBAL\Exception\ConnectionException: An exception occurred in driver: SQLSTATE[HY000] [2002] Connection refused (uncaught exception) at /var/www/html/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/AbstractMySQLDriver.php line 93 while running console command `mautic:broadcasts:send`
[2020-12-18 17:31:21] mautic.WARNING: Command `mautic:broadcasts:send` exited with status code 1
**Steps I have tried to fix the problem:**
Since I didn’t make any changes (on my VPS or mautic configuration) I don’t know what to do.
I already clear the cache and restart my VPS through AWS.
---
### Author:  [@joeyk](https://forum.mautic.org/u/joeyk)
#### Post date: [December 20, 2020, 9:02am UTC](https://forum.mautic.org/t/single-e-mail-stop-working-error-500/17469/2 "2020-12-20T09:02:11Z")
Hi, actually all your cron commands fail, not just email sending. Did segments upgrade? All okay with your sql tables?
Joey
---
### Author:  [@rodrigooliveira](https://forum.mautic.org/u/rodrigooliveira)
#### Post date: [December 21, 2020, 1:13am UTC](https://forum.mautic.org/t/single-e-mail-stop-working-error-500/17469/3 "2020-12-21T01:13:15Z")
Hi Joey, thanks for answering.
Yes, actually I notice that (that all my cron commands did fail), and this is very weird since I was running the same crons for at least one month, and I didn’t notice any issue. Everything was running fine, campaign, email, segments, etc.
Maybe it can be a problem with my database, a couple of minutes ago, I tried to test segments upgrade, but when I tried to save it, my mautic just stopped working, I get the “Can’t reach this page” error.
Yesterday I tried to log in, and it gave the return: “mautic database connection error (code #0)”, but I notice that just one time.
I solve that with the command line “sudo service mysql start” through ssh.
**This is the cron commands that I’m using:**
**Cron line:** \*/5 \* \* \* \* php /var/www/html/bin/console mautic:import
**Cron line:** 5,20,35,50 \* \* \* \* php /var/www/html/bin/console mautic:campaigns:rebuild
**Cron line:** 2,17,32,47 \* \* \* \* php /var/www/html/bin/console mautic:campaigns:trigger
**Cron line:** 8,23,38,52 \* \* \* \* php /var/www/html/bin/console mautic:segments:update
**Cron line:** 0,15,30,45 \* \* \* \* php /var/www/html/bin/console mautic:messages:send
**Cron line:** 0,15,30,45 \* \* \* \* php /var/www/html/bin/console mautic:emails:send
**Cron line:** 0,15,30,45 \* \* \* \* php /var/www/html/bin/console mautic:email:fetch
**Cron line:** 0,15,30,45 \* \* \* \* php /var/www/html/bin/console mautic:social:monitoring
**Cron line:** \* \*/30 \* \* \* php /var/www/html/bin/console mautic:webhooks:process
**Cron line:** 0,15,30,45 \* \* \* \* php /var/www/html/bin/console mautic:broadcasts:send
**Cron line:** \* 1 \* \* \* php /var/www/html/bin/console mautic:maintenance:cleanup --days-old=90 --dry-run
**Cron line:** 0 4 15 \* \* php /var/www/html/bin/console mautic:iplookup:download
**Cron line:** \*/5 \* \* \* \* php /var/www/html/bin/console mautic:reports:scheduler
**Cron line:** 0 5 10 \* \* php /var/www/html/bin/console mautic:unusedip:delete
The single mail is working again (and I didn’t did anything), but now my mautic just work for a couple of minutes, after that, I have to restart my AWS VPS.
**My VPS hardware is very modest, so I don’t know if this may be the problem:**
description: Computer
product: t3a.micro
vendor: Amazon EC2
width: 64 bits
capabilities: smbios-2.7 dmi-2.7 smp vsyscall32
\*-core
description: Motherboard
vendor: Amazon EC2
physical id: 0
\*-firmware
description: BIOS
vendor: Amazon EC2
physical id: 0
version: 1.0
date: 10/16/2017
size: 64KiB
capacity: 64KiB
capabilities: pci edd acpi virtualmachine
\*-cpu
description: CPU
product: AMD EPYC 7571
vendor: Advanced Micro Devices [AMD]
physical id: 4
bus info: cpu@0
version: AMD EPYC 7571
slot: CPU 0
size: 2200MHz
capacity: 3GHz
width: 64 bits
clock: 100MHz
capabilities: lm fpu fpu\_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr\_opt pdpe1gb rdtscp x86-64 constant\_tsc rep\_good nopl nonstop\_tsc cpuid extd\_apicid tsc\_known\_freq pni pclmulqdq ssse3 fma cx16 sse4\_1 sse4\_2 movbe popcnt aes xsave avx f16c rdrand hypervisor lahf\_lm cmp\_legacy cr8\_legacy abm sse4a misalignsse 3dnowprefetch topoext vmmcall fsgsbase bmi1 avx2 smep bmi2 rdseed adx smap clflushopt sha\_ni xsaveopt xsavec xgetbv1 clzero xsaveerptr arat npt nrip\_save
configuration: cores=1 enabledcores=1 threads=2
\*-memory
description: System memory
physical id: 1
size: 1GiB
**My database is very small, i have only:**
Contacts: 251
Mail templates: 6
Segments: 10
I don’t know what to do here, if you have any recommendation or test that I should be running, I will appreciate that. Thank you!
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### Author:  [@ouutcastveron](https://forum.mautic.org/u/ouutcastveron)
#### Post date: [August 12, 2021, 2:31am UTC](https://forum.mautic.org/t/single-e-mail-stop-working-error-500/17469/4 "2021-08-12T02:31:21Z")
Hi @rodrigooliveira, have you solved this issue?
I have the same and need to restore everyday.
@joeyk could you look at this?