operator does not exist: time stamp with time zone + integer in PostgreSql

I ran into a strange problem in postgres. I have two databases created in two different periods.
They both run on the same PostrgreSql 9.6 version on the same machine. When I run the query SELECT now() + 30 in database 1 -> It works correctly.
The same query that I copy and paste into the second database is giving error: operator does not exist: timestamp with time zone + integer in PostgreSql

Can someone guide me on this?

enter the image description here

magento2 – Magento 2 – Class seller Module Model Cbdom_main does not exist?

I am trying to integrate Ccavenuepay in my store but when i click on order i get errors like

a:4:{i:0;s:60:"Class MagekmfCcavenuepayEmiModelCbdom_main does not exist";i:1;s:7558:"#0 /home/dell/workspace/local.magento2/public/vendor/magento/framework/ObjectManager/Definition/Runtime.php(44): MagentoFrameworkCodeReaderClassReader->getConstructor('Magekmf\Ccavenu...')

enter the image description here

I have also created the Cbdom_main.php class but the error is not resolved. Please help

apps: checklist app that can create a checklist from lines of text, does it exist?

Sometimes I create and / or receive shopping lists, to-do lists, and other types of lists in plain text form, with each "item" in a separate row. So far I have only used a notepad app and only put an "X" in front of each line to indicate that it has been fixed.

This is a bit tricky as you need to position the cursor, have the keyboard open (it covers half the screen), and also take into account long elements that span multiple lines. So I tried to find a simple checklist app that would allow me to paste text into it and create a checklist with each line of text as an element, but amazing as it may seem, I couldn't find one. Some had support for things like CSV files, but none just for pasting or importing plain text.

Are there any of these applications? I just need something super simple, no fancy cloud sync or anything like that. Just a list with a checkbox for each item.

parsing – $ f: U rightarrow V $ a $ C ^ 2 $ diffeo, $ forall , a in U, exist r> 0 $ such that $ f left (B_ {a} ( epsilon) right) $ is convex $ forall epsilon leq r $

Leave $ U, V $ open sets in $ Bbb {R} ^ n $, $ f: U rightarrow V $ a class dipheomorphism $ C ^ 2 $. I need to demonstrate that, for everyone $ a in U $exists $ r> 0 $ such that the image of the open ball centered on $ to $ with radio $ epsilon $ it's convex, for everyone $ epsilon leq r $.

My idea is very simple, and that's why I think I'm forgetting something. I found some different answers for that question, like this one. But I want to know what is wrong with my thinking.

Well i actually just used the fact that $ f ^ – $ is continuous and $ f $ it is surjective. Yes $ a in U $, leave $ A $ an open ball of $ to $. So, $ f (A) $ It is an open set. So there is $ r> 0 $ such that $ B_ {f (a)} (r) subset f (A) $. So, I can use these balls as convex questions.

It's wrong? And what can I do to solve the question? I did not understand the answer linked above as it uses some statements about the Hessian, and I have not studied hessians yet. Context is the inverse function theorem.

8 – Try to create a field_image field that does not exist in entity type media

When I try to delete the field collection fields on the page (in Drupal 8)


error is displayed:
Drupal Core Field FieldException: Try to create a field_image field that does not exist on entity type media. in Drupal field Entity FieldConfig-> getFieldStorageDefinition ()

This error also appears when the function starts


Field file_image not used in media, and is not necessary there.
How to fix it?

php – Show user message does not exist or is not registered with javascript or ajax

Good morning, Good morning, how can I display a message that says USER IS NOT REGISTERED. when the person types the user wrong?

What I want to do is just use javascript or its ajax effect.

This is the form:


Sharepoint REST API: Get items from a list. If they do not exist, retrieve the ListItemEntityTypeFullName value from the List. All with one call

I have a small app that, when initialized, fetches information from a Sharepoint list through a REST call.

That information should eventually be modified from within the application, again through the REST API, and saved in the same List.
That is why, when I originally get that information, I also store the ListItemEntityTypeFullName value of the List in a global scope variable, which will then be passed in the POST function.

My code to get the list items is as follows:

        url: _spPageContextInfo.webAbsoluteUrl + "/_api/web/lists/getbytitle('" + listName + "')/items",
        type: "GET",
        headers: {"Accept": "application/json;odata=verbose"}
    }).done(function(data) {
        listType = data.d.results(0).__metadata.type

If no item is found, the only way I know how to store the ListItemEntityTypeFullName value would be to make a second ajax call as follows:

        url: _spPageContextInfo.webAbsoluteUrl + "/_api/web/lists/getbytitle('" + listName + "')/?$select=ListItemEntityTypeFullName",
        type: "GET",
        headers: {"Accept": "application/json;odata=verbose"}
    }).done(function(data) {
        listType = data.d.ListItemEntityTypeFullName

Now my question is: is there a way to make both requests in a single call, so if no items were found in the List, can I still get the ListItemEntityTypeFullName value somewhere? I am trying to optimize the amount of calls I have to make to keep the application fast and smooth.

Thank you!

Topics – Exception UnknownExtensionException: Module does not exist or is not installed

I get this error on my site

Drupal Core Extension Exception UnknownExtensionException: the module
does not exist or is not installed. in
Drupal Core Extension ExtensionList-> getExtensionInfo () (line 346 of
… core / lib / Drupal / Core / Extension / ExtensionList.php).

This error is occurring on the shared hosting server.

  public function getExtensionInfo($extension_name) {
$all_info = $this->getAllInstalledInfo();
if (isset($all_info($extension_name))) {
  return $all_info($extension_name);
throw new UnknownExtensionException("The {$this->type} $extension_name does not exist or is not installed."); // line 346


I've been searching online and came across a lot of discussions, but I couldn't fix it. How can I fix the error?

Php: 7.0
Drupal: 8

reductions: prove that these infinite decimal sets $ A $ and $ B $ exist

I am caught in this problem, so any help is appreciated. The problem asks to show that there are decidable sets $ A $ Y $ B $ such that $ A leq_ {m} ^ {p} B $ but $ B not leq_ {m} ^ {p} A $, cast $ A $, $ B $ Y $ bar {A} $ Y $ bar {B} $ they are infinite

Here, $ leq_ {m} ^ {p} $ refers to the polynomial time reducibility of many … I have a feeling that this may have something to do with leaving $ A $ be a decidable set such that $ A in CAD $, but $ B in P $, so the reduction cannot be done in polynomial time.

web hosting: how can a file download link download an old file that doesn't exist?

At the beginning of last year, I created a website that parses a CSV file and parses / displays it in a certain way for internal use. A page on this website provides a upload / download function so that the CSV file can simply be updated from the front-end. This part has worked well until today. I must have changed something while working that has affected the download, but for the life of me I can't think what.

I use a PHP copy function to get the file from a form and upload it to the server. This works fine, I can select a new CSV file on the front-end web page I have created and it loads fine. Then I go to the CPanel file manager, double check the file and know that it is the same new file that I just uploaded due to the changes I made. When PHP functions load it, rename it with a certain name overwrites the previous version. So to download it the front-end web page has a simple static link to the CSV file.

Now understand this: From somewhere today, every time I click on that link, it downloads the previous version from the file I have literally reviewed everything I can think about 25 times:

  • The website domain is an additional domain, DNS is all correct.
  • The plugin configuration in CPanel still points to the folder I am using.
  • The link on the website is absolutely correct, and it's the same when I inspect the HTML.
  • I have turned off caching .htaccess, deleted my cookies for this site.
  • I tried to delete the CSV file completely.
  • I tried to open in an incognito window

However, despite each and every one of these, it still downloads the old file, and when I check CPanel the new file is there with the new details and the old one doesn't exist.

I thought it would be smart: in CPanel I copied the file and renamed it: I tried to download it using the same link style (only renamed) and instead this brings me to the root web page of the site, although I have not been configured redirects.

I am completely stumped. I have checked several times that the link is correct, that I am looking at the correct file directory, that everything matches. And it does.Just that somewhere, somehow, the wrong file is being downloaded and I have no idea where it came from.