Upgrading Drupal

I just attempted to update the new core security updates on 7.56 by deleting the existing core folders and unpacking the new core files and the admin still shows me I have 7.56. I deleted them another time and made a new zip file, unpacked it again and the same thing.

PHP 7.1

Any ideas? This has never happened to me before on this server. I flushed the site cache after each update attempt.

Ran update.php

Flushed all system cache.

Hi 

I'm missing the toolbar link for installing/upgrading modules. The only link I have is for uninstalling. When I go into the backend link(/admin/modules/install) I get a permissions error, although I do have permission. My update manager is enabled, the 

# $conf['allow_authorize_operations'] = FALSE; line in the settings.php file is commented out. I don't know what else to check.

Someone suggested that this might have occurred after I updated Drupal core a number of weeks ago and I might not have noticed at the time.

After upgrade 8.3.7 => 8.4.4 I noticed the following:

If I go Structure|Content Types and choose whatever content type to be edited, i.e. I put mouse on the Edit option of the drop down menu, I can see that it points to:

http://mywebsite.com/admin/structure/types/manage/article

When I click on it, the browser is redirected to:

http://mywebsite.com/core/install.php

and I am getting a message:

I am currently upgrading our old sit(800+pages) to Drupal 8. W have had issues with ADA standards in the past. ADA-> American with DIsabilities Act. WIth many PDF's embedded and linked to the screen readers do not like that. SO our thoughts were to convert the PDF into html and directly link into our nodes. Screen readers like that . Then we use entity print to export it at the end to PDF for user control. I cannot find a good alternative to convert the PDF->HTML without numerous .CSS and .JS files accompanying the export.

I must be doing something particularly daft here.

I'm trying to use the Migrate modules in Drupal 8.4.4. I've installed Drupal successfully on a Synology NAS, and it seems to work. When I go to domain.dom/upgrade it still seems to work, but the fields for entering the source database are grayed out, and have the disabled property set to "disabled". Only the Database Password field is enabled.

I've also noticed that I cannot now disable the Migrate modules; the check boxes aren't enabled.

the first time I install D8 through upload to ftp, then I install commerce & lots related commerce modules through composer. after a while I realise the D8.5 has some new feature, then follow the instruction, I delete the "core/vendor"folder and those individual files to be replaced with the new version files/folder, then immediately I got a error message on the screen, the whole site is dead, only a error message showing.