Need Help with the Forums while transfer to PHP 8.0 version

[Nick Sadler]

Hi there,

I am facing one very wired thing here. I have created staging website of current forum and set up it on 8.0 PHP version and it's started throwing errors. I have tried to find the solutions but I didn't get any success yet. I am getting error like no files or directory found. I suspect this problem might be occurred due to folder path or database but I have changed the path and the error is still remains the same. So, it would be best if someone will assist me with sort out this it would be great.
I have attached screenshot as well as live and staging URL:
Live URL: http://www.thelabelmachine.com/forums
Staging URL: http://labelmachinstg.wpenginepowered.com/forums

Issue Screenshot: https://prnt.sc/Av6VhTKjAovI

I am really appreciate your help in advanced.
I am looking forward to your support.
Thank you.

[Nathan Explosion]

Have you uploaded this to your site to ensure all is well?

 

[Miss_B]

17 minutes ago, Nick Sadler said:

I am getting error like no files or directory found.

Can you please post the precise error message(s) that you are getting, or a screenshot of the error(s)?

[Marc]

Check you have updated anything you need to within your constants.php file, as well as your conf_global.php file

[Nick Sadler]

16 hours ago, Miss_B said:

Can you please post the precise error message(s) that you are getting, or a screenshot of the error(s)?

Please see this error msg: https://prnt.sc/Av6VhTKjAovI

15 hours ago, Marc Stridgen said:

Check you have updated anything you need to within your constants.php file, as well as your conf_global.php file

I have already changed the necessary URLs and phpmyadmin credentials, but still In am getting the error

[Nick Sadler]

Thanks For the Reply and for giving me the file. 
I have run the file that you have mentioned. See the file status here: https://prnt.sc/Ld9ImqIzJt9X

There is one below warning and everything is good 

• MySQL connection could not be established to perform version check. Make sure your MySQL Server version is 5.5.3 or above (5.6.2 or above recommended).

So please let me know Do I need to change the MySQL version?
Please check the below URLs:
Staging:  https://labelmachinstg.wpenginepowered.com/forums/ips4.php
Live: https://thelabelmachine.com/forums/ips4.php

Please remember I am having an issue with the staging site.

[Marc]

That would indicate the details you added to your conf_global.php file may be incorrect, so I could suggest checking those. That said, check the permissions on your conf_global.php file too in order to ensure your site can read it

[Nick Sadler]

Thanks for the reply, But I checked everything looks good. still I am getting an error

 

[Marc]

Try checking your uploads/logs folder to see if there is anything in there

[Nick Sadler]

I checked everything but not found any error that causing the Forums

[Marc]

If its only causing errors on PHP 8 there, you would need to contact your hosting company to gain assistance on this one.