Ajax error and cart technical error

[subhrocd]

My website's url is https://furnitureandpatio.com/. Its using at_nova theme. if you visit the site and open the browser console you will find 3 errors:

1. https://furnitureandpatio.com/modules/leofeature/psajax.php?rand=1598881860729 - 500 internal server error

2. https://furnitureandpatio.com/modules/appagebuilder/apajax.php?rand=1598881860838 - 500 internal server error

3. TECHNICAL ERROR: 

Details:
Error thrown: [object Object]
Text status: error

https://furnitureandpatio.com/modules/leofeature/views/js/leofeature_cart.js

This error is only coming on server. I have setup the site on localhost and there is no error.

I have a shared server so I asked for Apache error log from support. This is what it shows:

[Thu Jul 30 08:55:02.422739 2020] [:error] [pid 79792:tid 47766417729280] [client 103.240.98.63:7981] SoftException in Application.cpp:269: File "/home/furnit44/public_html/modules/leofeature/psajax.php" is writeable by others, referer: https://furnitureandpatio.com/
[Thu Jul 30 08:55:02.422887 2020] [core:error] [pid 79792:tid 47766417729280] [client 103.240.98.63:7981] End of script output before headers: psajax.php, referer: https://furnitureandpatio.com/
[Thu Jul 30 08:55:03.084374 2020] [:error] [pid 79792:tid 47766417729280] [client 103.240.98.63:7981] SoftException in Application.cpp:269: File "/home/furnit44/public_html/modules/appagebuilder/apajax.php" is writeable by others, referer: https://furnitureandpatio.com/
[Thu Jul 30 08:55:03.084477 2020] [core:error] [pid 79792:tid 47766417729280] [client 103.240.98.63:7981] End of script output before headers: apajax.php, referer: https://furnitureandpatio.com/

 

Please help me regarding this as i have been tearing my hair out over this issue for weeks now. Thanks