Cannot Upload Any Product Images: They Disappear

-- HikaShop version -- : 3.0.1
-- Joomla version -- : 3.6.5
-- PHP version -- : 5.6.30

I can drag and drop the product image (or upload it).
It shows that it is uploading.
The image container turns green then...the image disappears.
No images show up in the image area.
BUT, if I save the Product and go into the product again, you can see all the ATTEMPTS I made in uploading the images -- these are represented by the 'default image' icon.

I have switched the Editor from JCE to the default TinyMCE. But no change.
I also turned off RSFirewall!, but that didn't change anything either.

I found the issue:
The filename was apparently too long. Did not like 70 characters.
I have not had this issue before.

Is this perhaps a PHP setting that needs to change?
I'm thinking this is a suhosin issue.
I have contacted cPanel support.
Will let you know.

YES, it was a suhosin issue. It is working now.

Here is the fix. Set these variables in php.ini:

suhosin.get.max_value_length = 4095
suhosin.get.max_name_length = 512
suhosin.post.max_name_length = 512
suhosin.request.max_totalname_length = 512
suhosin.request.max_varname_length = 512

Note: This variable is especially important to receive back the confirmation code from PayPal: suhosin.get.max_value_length = 4095
Without this set the confirmation URL code will be truncated.