codeigniter3 file uploading not working

Usually HTTP ERROR 500 is a server error but can in rare case be a programming error.

Check your php.ini file:

php.ini file.

post_max_size = 10M and upload_max_filesize = 10M should be set to the same value and the size that you need to upload.

Your server memory setting can also effect this memory_limit = 64M

Set to what your needs are.

In localhost , its wrking fine. facing problem on live server.  or else, any problem with PHP Version. live server PHP Version is 5.4.32