While I was creating a user for you to access the website, I noticed the module exports fine on the production server, so it would be pointless to give you credentials, you wouldn't be able to reproduce the problem…
So the problem only happens on my local server, which has the same files and the same database (i only changed the site's url). This server is running ubuntu 16.04 and I have installed different php versions.
I tried to change the php version, and it fixes the problem. The problematic version is a 7.0, and a 5.6 works fine. My guess is that I may be missing a module or something like that.
What are Toolset's exact requirements ?
Here are the first lines of phpinfo for the bad configuration :
PHP Version 7.0.19-1+deb.sury.org~xenial+2
System Linux caribou 4.4.0-78-lowlatency #99-Ubuntu SMP PREEMPT Thu Apr 27 16:46:19 UTC 2017 x86_64
Build Date May 22 2017 12:48:42
Server API Apache 2.0 Handler
Virtual Directory Support disabled
Configuration File (php.ini) Path /etc/php/7.0/apache2
Loaded Configuration File /etc/php/7.0/apache2/php.ini
Scan this dir for additional .ini files /etc/php/7.0/apache2/conf.d
Additional .ini files parsed /etc/php/7.0/apache2/conf.d/10-mysqlnd.ini, /etc/php/7.0/apache2/conf.d/10-opcache.ini, /etc/php/7.0/apache2/conf.d/10-pdo.ini, /etc/php/7.0/apache2/conf.d/15-xml.ini, /etc/php/7.0/apache2/conf.d/20-calendar.ini, /etc/php/7.0/apache2/conf.d/20-ctype.ini, /etc/php/7.0/apache2/conf.d/20-curl.ini, /etc/php/7.0/apache2/conf.d/20-dom.ini, /etc/php/7.0/apache2/conf.d/20-exif.ini, /etc/php/7.0/apache2/conf.d/20-fileinfo.ini, /etc/php/7.0/apache2/conf.d/20-ftp.ini, /etc/php/7.0/apache2/conf.d/20-gd.ini, /etc/php/7.0/apache2/conf.d/20-gettext.ini, /etc/php/7.0/apache2/conf.d/20-iconv.ini, /etc/php/7.0/apache2/conf.d/20-json.ini, /etc/php/7.0/apache2/conf.d/20-mbstring.ini, /etc/php/7.0/apache2/conf.d/20-mcrypt.ini, /etc/php/7.0/apache2/conf.d/20-mysqli.ini, /etc/php/7.0/apache2/conf.d/20-pdo_mysql.ini, /etc/php/7.0/apache2/conf.d/20-pdo_sqlite.ini, /etc/php/7.0/apache2/conf.d/20-phar.ini, /etc/php/7.0/apache2/conf.d/20-posix.ini, /etc/php/7.0/apache2/conf.d/20-readline.ini, /etc/php/7.0/apache2/conf.d/20-shmop.ini, /etc/php/7.0/apache2/conf.d/20-simplexml.ini, /etc/php/7.0/apache2/conf.d/20-sockets.ini, /etc/php/7.0/apache2/conf.d/20-sqlite3.ini, /etc/php/7.0/apache2/conf.d/20-sysvmsg.ini, /etc/php/7.0/apache2/conf.d/20-sysvsem.ini, /etc/php/7.0/apache2/conf.d/20-sysvshm.ini, /etc/php/7.0/apache2/conf.d/20-tokenizer.ini, /etc/php/7.0/apache2/conf.d/20-wddx.ini, /etc/php/7.0/apache2/conf.d/20-xdebug.ini, /etc/php/7.0/apache2/conf.d/20-xmlreader.ini, /etc/php/7.0/apache2/conf.d/20-xmlwriter.ini, /etc/php/7.0/apache2/conf.d/20-xsl.ini
PHP API 20151012
PHP Extension 20151012
Zend Extension 320151012
Zend Extension Build API320151012,NTS
PHP Extension Build API20151012,NTS
Debug Build no
Thread Safety disabled
Zend Signal Handling disabled
Zend Memory Manager enabled
Zend Multibyte Support provided by mbstring
IPv6 Support enabled
DTrace Support available, disabled
Registered PHP Streams https, ftps, compress.zlib, php, file, glob, data, http, ftp, phar
Registered Stream Socket Transports tcp, udp, unix, udg, ssl, tls, tlsv1.0, tlsv1.1, tlsv1.2
Registered Stream Filters zlib.*, string.rot13, string.toupper, string.tolower, string.strip_tags, convert.*, consumed, dechunk, convert.iconv.*, mcrypt.*, mdecrypt.*
and the same for the good config :
PHP Version 5.6.30-11+deb.sury.org~xenial+3
System Linux caribou 4.4.0-78-lowlatency #99-Ubuntu SMP PREEMPT Thu Apr 27 16:46:19 UTC 2017 x86_64
Server API Apache 2.0 Handler
Virtual Directory Support disabled
Configuration File (php.ini) Path /etc/php/5.6/apache2
Loaded Configuration File /etc/php/5.6/apache2/php.ini
Scan this dir for additional .ini files /etc/php/5.6/apache2/conf.d
Additional .ini files parsed /etc/php/5.6/apache2/conf.d/10-mysqlnd.ini, /etc/php/5.6/apache2/conf.d/10-opcache.ini, /etc/php/5.6/apache2/conf.d/10-pdo.ini, /etc/php/5.6/apache2/conf.d/15-xml.ini, /etc/php/5.6/apache2/conf.d/20-bz2.ini, /etc/php/5.6/apache2/conf.d/20-calendar.ini, /etc/php/5.6/apache2/conf.d/20-ctype.ini, /etc/php/5.6/apache2/conf.d/20-curl.ini, /etc/php/5.6/apache2/conf.d/20-dom.ini, /etc/php/5.6/apache2/conf.d/20-exif.ini, /etc/php/5.6/apache2/conf.d/20-fileinfo.ini, /etc/php/5.6/apache2/conf.d/20-ftp.ini, /etc/php/5.6/apache2/conf.d/20-gd.ini, /etc/php/5.6/apache2/conf.d/20-gettext.ini, /etc/php/5.6/apache2/conf.d/20-iconv.ini, /etc/php/5.6/apache2/conf.d/20-intl.ini, /etc/php/5.6/apache2/conf.d/20-json.ini, /etc/php/5.6/apache2/conf.d/20-ldap.ini, /etc/php/5.6/apache2/conf.d/20-mbstring.ini, /etc/php/5.6/apache2/conf.d/20-mcrypt.ini, /etc/php/5.6/apache2/conf.d/20-mysql.ini, /etc/php/5.6/apache2/conf.d/20-mysqli.ini, /etc/php/5.6/apache2/conf.d/20-pdo_mysql.ini, /etc/php/5.6/apache2/conf.d/20-pdo_sqlite.ini, /etc/php/5.6/apache2/conf.d/20-phar.ini, /etc/php/5.6/apache2/conf.d/20-posix.ini, /etc/php/5.6/apache2/conf.d/20-readline.ini, /etc/php/5.6/apache2/conf.d/20-shmop.ini, /etc/php/5.6/apache2/conf.d/20-simplexml.ini, /etc/php/5.6/apache2/conf.d/20-sockets.ini, /etc/php/5.6/apache2/conf.d/20-sqlite3.ini, /etc/php/5.6/apache2/conf.d/20-sysvmsg.ini, /etc/php/5.6/apache2/conf.d/20-sysvsem.ini, /etc/php/5.6/apache2/conf.d/20-sysvshm.ini, /etc/php/5.6/apache2/conf.d/20-tokenizer.ini, /etc/php/5.6/apache2/conf.d/20-wddx.ini, /etc/php/5.6/apache2/conf.d/20-xdebug.ini, /etc/php/5.6/apache2/conf.d/20-xmlreader.ini, /etc/php/5.6/apache2/conf.d/20-xmlrpc.ini, /etc/php/5.6/apache2/conf.d/20-xmlwriter.ini, /etc/php/5.6/apache2/conf.d/20-xsl.ini, /etc/php/5.6/apache2/conf.d/20-zip.ini
PHP API 20131106
PHP Extension 20131226
Zend Extension 220131226
Zend Extension Build API220131226,NTS
PHP Extension Build API20131226,NTS
Debug Build no
Thread Safety disabled
Zend Signal Handling disabled
Zend Memory Manager enabled
Zend Multibyte Support provided by mbstring
IPv6 Support enabled
DTrace Support enabled
Registered PHP Streams https, ftps, compress.zlib, php, file, glob, data, http, ftp, compress.bzip2, phar, zip
Registered Stream Socket Transports tcp, udp, unix, udg, ssl, tls, tlsv1.0, tlsv1.1, tlsv1.2
Registered Stream Filters zlib.*, string.rot13, string.toupper, string.tolower, string.strip_tags, convert.*, consumed, dechunk, bzip2.*, convert.iconv.*, mcrypt.*, mdecrypt.*
Does it give you an clue about what's missing from the bad config ?