printing: the HP printer can not be installed: the installation of the add-on has not been done correctly

I'm trying to configure my HP LaserJet P1102 on my Ubuntu 19.04

I have downloaded and installed hplip 3.19.5 from here

At first the installation seems to be successful. Request that the plugin be installed, then say "Install the successful plugin." But after clicking on OK in this message, go back to the window in which I must choose which printer to install and other pop-up messages:

error: the device you are trying to configure requires a binary add-on.
Some functionalities may not work as expected without the add-ons.
Run & # 39; hp-plugin & # 39; as a normal user to install the add-ons. To visit for more information.

error: hp-setup failed. Run hp-setup manually.

web hosting – Can WordPress be installed in a subdomain of an existing site?

I have a Web Design and Development of Linux site. and a subdomain instructions page for minimum installation instructions for Debian,

I want to add another subdomain with WordPress installed for the non-profit organization of a friend. I have installed WordPress manually before, but never as a subdomain.

Here is the empty subdomain with placeholder

How can I solve the problem `the mysql-server package is not installed`?

I just updated MySQL from version 5.5.55 to version 5.6, through SSH. I have successfully started MySQL, however, I am experiencing the Internal 500 server error when trying to access the website on the server, as well as generate the Apache test page when trying to access webmail.

Then I executed the command rpm -q mysql-server, where I received the following response:

mysql-server package is not installed

From the previous output, I assume that MySQL has not been installed. However, when I enter mysql --version, the following is issued:

mysql See 14.14 Distrib 5.6.44, for Linux (x86_64) using the EditLine wrapper

As such, I'm confused and I'm not sure if MySQL is really installed or not.

To solve this problem and allow access to the website and the mail domain, what would be the next step you would need to take?

The apk files are not installed in Samsung S9 Plus


I recently received an HTC One M9 and wanted to replace its gallery with the gallery of my previous phone because I loved one of the filters I had. This led me to have to download a third-party APK file, but when I tried to install it, it just gave me an error saying "Application not installed". First I thought it was because it would not be installed because the current gallery is still on my phone, but after disabling the application, the error message still appears. Is there any way I can solve this?

The APK file is lucky if that helps

Government Root CA installed on the computer / browser and Man-In-The-Middle [duplicate]

This question already has an answer here:

  • Is there anything that prevents the NSA from becoming a root CA?

    4 answers

  • How can my employer be a man in the middle when I log in to Gmail? [duplicate]

    5 Answers

Some countries already have their CA government root installed on the computer / browsers. Is it possible for these countries to read emails from Google, etc., using Man-In-The-Middle or similar techniques?

seo – Is it necessary to install Yoast for a website that is installed inside an existing WordPress installation folder?

If you are setting up a separate WordPress site (that is, without multisite) and you want to use Yoast SEO, then yes, you will have to install the add-on again. The new site has no way of using the existing copy on its previous site. You also have to register it as a separate entity for Google.

I'm not sure what your plan is, but I would not recommend hosting a new site in a folder within an existing domain. If you want it to be classified correctly, you should have your own domain. Apart from that, I would also place both sites in separate folders, side by side, instead of nesting one inside the other.

Magento 2. How can I correctly extend the provider / compositor / installed .json?

  • I assume that installed.json It contains all the necessary dependencies for Magento.
  • How can I extend properly seller / compositor / installed.json?


  • Magento has a hard dependence on one of the libraries, more specifically a specific version of a third party msp / recaptcha module: 2.0.2. I want to update it to 2.1.2.
  • Now, if it were a softer dependency (~ 2.0.2) it could have done it from composer.json as described in the answer to this question

At this point, it should be clear what I need to achieve and why. Please ask for more details if necessary. Thank you.

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IP test?


mac os x: installed mysql 8 on Mac and then mysql 5.7 now no longer work

I have a new Macbook pro with Mojave. I installed mysql 8 using the dmg file, but I realized that Sequel Pro is not playing well with it and, after investigating, I decided to install mysql 5.7. This time I installed beer and I did it. Sequel pro keeps going down and my previous database appears even though I thought I had deleted it. Before restarting the mac and starting over, is there any way to remove mysql (all versions) from the computer and reinstall it using only version 5.7?

If this is the wrong place to ask kindly, let me know where I should ask and I will.

macos: I installed XAMPP for OS X 7.3.5 (PHP 7.3.5), but it seems to have no functionality

I'm a beginner in web design, so I downloaded XAMPP for OS X 7.3.5 (PHP 7.3.5) from Unfortunately, it does not seem to work. I was checking if I had everything configured correctly, but when I tried to access the functionality of localhost by typing "localhost / test1.html" in Firefox (test1.html is a file that I have in the main folder "Documents"). just received a "Can not connect" error.

I downloaded it and installed it quite easily. He did not give directions, in addition to double-clicking on the downloaded file, moving it to the applications folder and then entering the password to access it.
When I wrote & # 39; localhost / test.html & # 39; in the URL of Firefox, it said "Unable to connect Firefox I can not establish a connection with the server in localhost". Unlike when you do not have wi-fi and it says "Hmm, we have problems finding that site, we can not connect to the server at".
XAMPP on my computer