Warning: Illegal string offset

Hi, i get some errors with the snc mono theme. Everything work great on MAMP, but after moving to my host i get this warnings:

Warning: Illegal string offset ‘search_box’ in /home/mhd-01/www.arriverannotempimigliori.it/htdocs/wp-content/themes/snc-mono/functions.php on line 113

Warning: Illegal string offset ‘info_bar’ in /home/mhd-01/www.arriverannotempimigliori.it/htdocs/wp-content/themes/snc-mono/functions.php on line 114

Warning: Illegal string offset ‘header_color’ in /home/mhd-01/www.arriverannotempimigliori.it/htdocs/wp-content/themes/snc-mono/functions.php on line 115

Warning: Illegal string offset ‘color_bg_content’ in /home/mhd-01/www.arriverannotempimigliori.it/htdocs/wp-content/themes/snc-mono/functions.php on line 116

Warning: Illegal string offset ‘footer’ in /home/mhd-01/www.arriverannotempimigliori.it/htdocs/wp-content/themes/snc-mono/functions.php on line 117

Warning: Illegal string offset ‘credit’ in /home/mhd-01/www.arriverannotempimigliori.it/htdocs/wp-content/themes/snc-mono/functions.php on line 118

Warning: Illegal string offset ‘footer_text’ in /home/mhd-01/www.arriverannotempimigliori.it/htdocs/wp-content/themes/snc-mono/functions.php on line 119

Warning: Missing argument 2 for add_custom_image_header(), called in /home/mhd-01/www.arriverannotempimigliori.it/htdocs/wp-content/themes/snc-mono/functions.php on line 74 and defined in /home/mhd-01/www.arriverannotempimigliori.it/htdocs/wp-includes/deprecated.php on line 3025

Site url: https://www.arriverannotempimigliori.it/
Ther’s a way to fix those problems? Many thanks!