500 ERROR during installation process of mods-for-hesk

[insyncim64]

Script URL: http://localhost:8888/hesk/install
Mods for HESK version: 3.3.0
HESK version: 2.7.6
Hosting company:
URL of phpinfo.php:
URL of session_test.php:
What terms did you try when SEARCHING for a solution:

Write your message below:
Hi Mike,
I have installed hesk 2.7.6 and it can runs smoothly. I would like to install mods-for-hesk based on the instructions. I have extracted the zip file and copied all content to the original folder of hesk. All necessary files have been replaced.
When I try to install mods-for-hesk in URL http://localhost:8888/hesk/install. It shows "This page isn’t working
localhost is currently unable to handle this request.
HTTP ERROR 500"

Thanks for your help!

Best regards,
Bin

[mkoch227]

Check your PHP log files. This is usually an error_log file, which should be in your /hesk/install folder. If you find an error_log file, paste the contents here.