Reply To: Illegal string offset & Invalid argument supplied

Warning: Illegal string offset ‘slug’ in C:\xampp\htdocs\testordner\wp-content\plugins\connections\includes\shortcode\class.shortcode.php on line 439

Warning: Invalid argument supplied for foreach() in C:\xampp\htdocs\testordner\wp-content\plugins\connections\includes\shortcode\class.shortcode.php on line 206

This warning is on the top of every company-entry.
I use the newest version of all components and have a local server (xampp).
I use a new installed wordpress without other plugins.