Drupal 8.x

I am trying to turn off entity caching for a custom entity in 8.7.3. This is an existing entity if that matters. Described via:

 * @ContentEntityType(
 *   id = "shift",
 *   label = @Translation("Shift"),
 *   base_table = "scheduler_entity_shifts",
 *   entity_keys = {
 *     "id" = "id",
 *     "uuid" = "uuid",
 *   },
 *   static_cache = FALSE,
 *   persistent_cache = FALSE,
 *   translatable = FALSE,
 * )

I added the last 3 lines. I have added a hook:

Hi,

Below every page on my site here: https://chesapeakeregional.com, there is white space being output under the footer. As far as I can tell, it's on every page. 

When I inspect the page, I see this code: <iframe owner="archetype" style="display: none; visibility: hidden;"></iframe> but am unsure where the site may be outputting an iframe below the footer. Any ideas on if this is a Drupal 8/module issue or something added into the code?

Hi,

I installed Drupal 8.8.1 successfully but after some time I am getting following error, when I cleared cache. Any idea or help what could be causing this?

Look like cache-config table  is does not exist, when I verify MySql database table not exist message.

Getting table does not exist error message from below tables.

Cache_data,Cache_config,Cache_bootstrap

I did database updates using composer and drush but no luck.

Error:

Trying to find a simple way to add via hook possibly within mymodulename_search_api_solr_search_results_alter to hide a specific site page from internal search results. I'm finding suggestions for modules but is there a simpler way to hide a page?

I have created a new image style having a full width of 870px for article content type. However, the images are still not showing up for the full width of the right size as you can see on the following page. Could anyone please let me know what I am missing and how should I fix the issue so that the images can start showing for the full width of the content on the right size?

https://japaneseautoworld.com/news/why-should-you-use-paint-protection-f...

I do not know whats the first issue to solve. (core update is also not working)
So I will try to start to resolve this problem first to get a system without error befor upgrading:

One error is whe I try to clear the cache (drush cr) or   drush cache-clear -> 3 (router)
I  get this error (poll is available but I am not able to enable poll :