403 error on image upload

Hi,

when I click on the "Upload & Crop" or "Multiple Upload" buttons, the request to the page /storage_uploader.php?uo=bx_persons_picture_crop&so=bx_persons_pictures&uid=2363Msa7&a=show_uploader_form&m=0&c=1&p=0&_t=Sat%20Aug%2017%202019%2017%3A00%3A42%20GMT+0200%20%28Ora%20legale%20dell%u2019Europa%20centrale%29 returns a 403 error, so the uploader module does not work.

I tried both with Local and S3 storages, without success.

PHP:

• version = 7.2.19-0ubuntu0.18.04.2 - UNDEFINED (value checking failed)
• allow_url_fopen = On - OK
• allow_url_include = Off - OK
• magic_quotes_gpc = Off - OK
• memory_limit = 134217728 - OK
• post_max_size = 8388608 - OK
• upload_max_filesize = 2097152 - OK
• register_globals = Off - OK
• safe_mode = Off - OK
• disable_functions = opcache_get_status - OK
• php module: curl = curl - OK
• php module: gd = gd - OK
• php module: mbstring = mbstring - OK
• php module: json = json - OK
• php module: fileinfo = fileinfo - OK
• php module: zip = zip - OK
• php module: openssl = openssl - OK
• php module: exif = exif - OK

MySQL:

• version = 5.5.5 - OK

Web-server: Apache

• rewrite_module - FAIL (you will need to install rewrite_module for Apache)

OS:

• Linux lp-unaio-dev.local 4.15.0-55-generic #60-Ubuntu SMP Tue Jul 2 18:22:20 UTC 2019 x86_64

Hardware:

• Hardware requirements can not be determined automatically - manual server audit may be required.

Site setup

• UNA version = 10.0.0-RC1 - OK
• Files and folders permissions - please click here to find out if permissions are correct.
• ffmpeg -

  ffmpeg version 4.0.2-static Copyright (c) 2000-2018 the FFmpeg developers  built with gcc 6.3.0 (Debian 6.3.0-18+deb9u1) 20170516  configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc-6 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gray --enable-libaom --enable-libfribidi --enable-libass --enable-libvmaf --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librubberband --enable-libsoxr --enable-libspeex --enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzimg  libavutil      56. 14.100 / 56. 14.100  libavcodec     58. 18.100 / 58. 18.100  libavformat    58. 12.100 / 58. 12.100  libavdevice    58.  3.100 / 58.  3.100  libavfilter     7. 16.100 /  7. 16.100  libswscale      5.  1.100 /  5.  1.100  libswresample   3.  1.100 /  3.  1.100  libpostproc    55.  1.100 / 55.  1.100 Hyper fast Audio and Video encoder usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...
  Use -h to get full help or, even better, run 'man ffmpeg'

  if you don't know if output is correct then manual server audit may be required.
• Mail sending - click here to send test email
• Cron jobs -

  no crontab for xxxx

  if you are unsure if output is correct then manual server audit may be required
• Last cron jobs execution - None

Site optimization

PHP:

• PHP accelerator = ZendOPcache - OK
• PHP setup = fpm-fcgi - OK

MySQL:

• key_buffer_size = 16777216 - OK
• query_cache_limit = 1048576 - OK
• query_cache_size = 16777216 - OK
• query_cache_type = ON - OK
• max_heap_table_size = 16777216 - OK
• tmp_table_size = 16777216 - OK
• thread_cache_size = 8 - OK

Web-server:

• User-side caching for static content - click here to check it in Google Page Speed
  If it is not enabled then please consider implement this optimization, since it improve perceived site speed and save the bandwidth, refer to this tutorial on how to do this.
  To apply this optimization you need to have expires_module - Array
• Server-side content compression - can be checked manually or in "Page Speed" tool build-in into browser.
  If it is not enabled then please consider implement this optimization, since it improve perceived site speed and save the bandwidth, refer to this tutorial on how to do this.
  To apply this optimization you need to have deflate_module - Array

UNA:

• DB cache = On (File based cache engine) - OK
• Pages cache = On (File based cache engine) - OK
• Page blocks cache = On (File based cache engine) - OK
• Templates Cache = On (FileHtml based cache engine) - OK
• CSS files cache = On - OK
• JS files cache = On - OK
• Compression for CSS/JS cache = On - OK

Thank you