Denzel Chia
Moderator
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#23043 |

Hi,

First of all. Check you error logs for any memory exhaust issue.
If there is any records of memory exhaust, then it’s confirmed a memory issue.

Twenty Fifteen theme has a very small file size compared to Alora Theme, and takes up much less memory.

Try increasing your PHP values to

max_execution_time 180
memory_limit 256M
post_max_size 64M
upload_max_filesize 64M

Thanks!