errore con php7

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con php7 ho errore Notice: Array to string conversion in /var/www/vhosts/webchat.domains/testchatme.ovh/wp-content/themes/pasw2015/github/vendor/Parsedown.php on line 894

Notice: Undefined property: Parsedown::$Array in /var/www/vhosts/webchat.domains/testchatme.ovh/wp-content/themes/pasw2015/github/vendor/Parsedown.php on line 894

Fatal error: Uncaught Error: Function name must be a string in /var/www/vhosts/webchat.domains/testchatme.ovh/wp-content/themes/pasw2015/github/vendor/Parsedown.php:894 Stack trace: #0 /var/www/vhosts/webchat.domains/testchatme.ovh/wp-content/themes/pasw2015/github/vendor/Parsedown.php(931): Parsedown->element(Array) #1 /var/www/vhosts/webchat.domains/testchatme.ovh/wp-content/themes/pasw2015/github/vendor/Parsedown.php(257): Parsedown->elements(Array) #2 /var/www/vhosts/webchat.domains/testchatme.ovh/wp-content/themes/pasw2015/github/vendor/Parsedown.php(48): Parsedown->lines(Array) #3 /var/www/vhosts/webchat.domains/testchatme.ovh/wp-content/themes/pasw2015/github/src/GitHub_Updater/GitHub_API.php(128): Parsedown->text('Per la lista co...') #4 /var/www/vhosts/webchat.domains/testchatme.ovh/wp-content/themes/pasw2015/github/src/GitHub_Updater/Theme.php(82): Fragen\GitHub_Updater\GitHub_API->get_remote_changes('CHANGELOG.md') #5 /var/www/vhosts/webchat.domains/testchatme.ovh/wp-content/themes/pasw2015/github/src/GitHub_Up in /var/www/vhosts/webchat.domains/testchatme.ovh/wp-content/themes/pasw2015/github/vendor/Parsedown.php on line 894