Because of what these errors in prestashop?

Question

Prestashop

I made a backup, tried to update prestashop to a newer version, it didn’t work
I rolled back the backup, I got these errors

Errors: 48
blockreassurance (error parsing in /modules/blockreassurance/blockreassurance.php),
blockreassurance (class missing in /modules/blockreassurance/blockreassurance.php)
contactform (error parsing in /modules/contactform/contactform.php),
contactform (class missing in /modules/contactform/contactform.php)
ps_banner (parsing error in /modules/ps_banner/ps_banner.php),
ps_banner (class missing in /modules/ps_banner/ps_banner.php)
ps_categorytree (parsing error in /modules/ps_categorytree/ ps_categorytree.php),
ps_categorytree (the class is missing in /modules/ps_categorytree/ps_categorytree.php)
ps_checkpayment (parsing the error in /modules/ps_checkpayment/ps_checkpayment.php),
ps_checkpayment (the class is missing in /modules/ps_checkpayment/ps_checkpayment.php)
ps_contactinfo (parsing the error in /modules/ps_contactinfo/ps_contactinfo.php),

What is it and how to treat?