Mail sending issues

[CTGO.co]

Clean the AbanteCart error log and try again.
Check for latest errors after fail

I do next error only: 2019-07-21 14:29:59 - Error: E-Mail sender required!

I couldn't share screenshot because the max. allowed file size 650 kb. only

[Basara]

In your AbanteCart Mail setting what type of sender you have? SMTP or Php Mail?

[CTGO.co]

Clean the AbanteCart error log and try again.
Check for latest errors after fail

This is the log error which i got:

2019-07-28 0:45:39 - Error: E-Mail sender required!


2019-07-28 0:46:18 - warning: AbanteCart core v.1.2.15 Use of undefined constant CACHE_DRIVER - assumed 'CACHE_DRIVER' (this will throw an Error in a future version of PHP) in <b>/home/u8526052/public_html/core/helper/system_check.php</b> on line <b>126</b>

[HADY]

Did you add "file" upload to the contact us form? If so check that upload folder exist and writable

Hello!
1. Where we gonna find the upload folder?
2. If someone sent a contact us form and uploaded a file, where it will be saved ??
3. why the contact us from appears only on admin dashboard and not arriving to the website admin's email??

Regards
HADY

[Basara]

Upload Directory - directory where uploaded files will be saved. Your directory will be created in _your_site_folder_/admin/system/uploads.
https://abantecart.atlassian.net/wiki/spaces/AD/pages/13500486/Forms+Manager

[HADY]

Upload Directory - directory where uploaded files will be saved. Your directory will be created in _your_site_folder_/admin/system/uploads.
https://abantecart.atlassian.net/wiki/spaces/AD/pages/13500486/Forms+Manager

Thanks Basara!
That was very helpful. What about my 3rd question please??

Regards
Hady

[Basara]

It is hard to answer. Incorrectly configured mail, hosting mail rules, sender (smtp provider).....

[HADY]

It is hard to answer. Incorrectly configured mail, hosting mail rules, sender (smtp provider).....

All of these rules were taken into consideration and applied correctly. What is missing then ??