Hi Ellen,
Today I updated the PHP version to 5.6.5 and my Moodle site is working perfect. However, I have taken the opportunity to update the system to the latest build 3.5.2+ (20181019) and now, during the cron task and the HTTPS conversion tool via SSH appears the following message:
PHP Parse error: syntax error, unexpected ':', expecting ';' or '{' in /var/www/vhosts/mywebsite/lib/classes/component.php on line 1265
What I can do? I deleted the cache too.
Thanks.