Upgrading Drupal

  [RuntimeException]
  Could not delete /mnt/c/Users/Sites/devdesktop/drupalDeadMeat/vendor/composer/a2f0f1bd/drupal-core-089417f/modules:

Also i can't run drupal anymore
Warning: require(C:\Users\Sites\devdesktop\drupalDeadMeat\vendor\composer/../symfony/polyfill-php70/bootstrap.php): failed to open stream: No such file or directory in

https://www.drupal.org/docs/upgrading-drupal/upgrading-from-drupal-8-to-...

Stuck at step3:

Your requirements could not be resolved to an installable set of packages.

With my shared host I cannot use composer and that is why I use composer in combination with CLI and Wampserver on my localhost. Updating Drupal core went smoothly in the past because I updated with composer on my localhost and then replaced Core and Vendor on my shared host.

I would like to upgrade from 8.9.20 to 9, but I can't.

The problem starts with updating Composer from version 1.10.19 to version 2. This also fails due to dependency issues.

I've been using Composer 2 for at least a year on my Drupal 8 (now 9) "recommended" site with no issues, and most recently with php 8.0.  However, I had a Drupal 7 site go belly up, and had to switch back to php 7.4 to make that work. My D7 and D9 websites both work fine, but I am now unable to update the D9 site using Composer.

I have php 7.4 at the moment, and composer 2.2.6 (see below for some variations on php version and resulting errors)

Hi, I'm currently trying to update a Drupal 8 project to Drupal 9.3.4. Unfortunately after the update all field formatters in views are gone and the default admin views only display the raw field output (e.g. the node title without a link). This also happens, if I try to create a new view with just a single title field. No field formatter options are displayed. I'm not sure what I'm doing wrong here or what I could do to fix this.

Any help is highly appreciated. Thanks in advance.

Chris (developer at labor b) 

I'm trying to upgrade from Drupal 9.2.3 to 9.2.4 using composer, which seems to work, but when I look for the home page I get redirected to /core/install.php, which does nothing except show a blank screen. These upgrades normally work with no trouble at all. The specific command was

composer update drupal/core "drupal/core-*" --with-all-dependencies

and I'm using composer 2.2.4. I'd be glad of suggestions to fix this.