Upgrading Drupal

I upgraded my Drupal 7 instance to v7.63, and now the reCaptcha does not work. The email form come up, but the checkbox for i am not a bot is missing and after I email, nothing happens and no error is displayed. I started looking at Drupal website, and found some related links:

https://www.drupal.org/project/captcha/issues/2449209

perhaps we can do something like:

Hi, 

Our Drupal 8.5 suddenly give error message (The website encountered an unexpected error. Please try again later.) and I can not make sense of it. I update the core and the whole website stopped so I replaced with backup. The view is working but when login and try to do anything Edit, update, configure I get this error. The server log for an example to edit a page is posted here. 

When I try to run upgrade I get 

Requirements problem

Errors found

UNRESOLVED DEPENDENCYMigrate (Version >=8.2, <8.3 required)

I am getting an error in my status report, but can't get drush to fix it. Does anyone have any suggestions?

From the status report:

ENTITY/FIELD DEFINITIONS: Mismatched entity and/or field definitions
The following changes were detected in the entity type and field definitions.
Webform submission: The Language field needs to be updated.

After running the drush commands below, the status report doesn't change:

Hi!

I'm having difficulty updating my current Drupal version 8.6.4 to 8.6.7 using composer.

After typing the command: 

composer update drupal/core --with-dependencies

I get this error message:

I just did a migration from my d7 site to d8 and it went tolerably well, except that node bodies are not being displayed. I have been looking around and can't seem to find any reason why this should be so...

Using version ^9.5 for drush/drush
./composer.json has been updated
> DrupalProject\composer\ScriptHandler::checkComposerVersion
Loading composer repositories with package information
Updating dependencies (including require-dev)
Package operations: 118 installs, 17 updates, 1 removal
  - Removing typo3/phar-stream-wrapper (v2.0.1)
  - Downgrading paragonie/random_compat (v2.0.18 => v2.0.17): Loading from cache
  - Downgrading symfony/class-loader (v3.4.21 => v3.4.20): Loading from cache