Error while starting gnome-control-center

I while starting gnome-control-center on kubuntu 19.04, I got this error I can find any working solution: gnome-control-center (gnome-control-center:3239): Gtk-WARNING **: 16:12:56.364: Theme parsing error: gtk.css:68:35: The style property GtkButton:child-displacement-x is deprecated and shouldn’t be used anymore. It will be removed in a future version (gnome-control-center:3239): Gtk-WARNING **: 16:12:56.364: Theme parsing error: gtk.css:69:35: The style…

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Cannot install mysql-server due to bad uninstallation of mysql

I recently uninstalled mysql which I think I didn’t do properly. I think I might have created a circular dependency. Running sudo apt-get install mysql-server gives the following error: Options marked [*] produce a lot of output – pipe it through ‘less’ or ‘more’ ! dpkg: error processing archive /tmp/apt-dpkg-install-hpScKN/0-mysql-common_5.8+1.0.4_all.deb (–unpack): subprocess new pre-installation script…

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Get transaction data from full node

Background Information I am building an application that requires the ability to query any bitcoin full node (from a python script using raw tcp sockets) in order to read the OP_Return value listed in the following transaction (https://live.blockcypher.com/btc-testnet/tx/2599dbe540a583ede3512fef9a0f26be718c039ffd4d04d85ff3b339f40e73b1/) What I have done to date I have successfully managed to establish the version + verack, however…

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Why hasn’t cold storage (offline signing) been supported by Bitcoin Core (GUI) up till now (0.19.0.1)?

Is there any deep reason not to support this? Or is this merely a “good idea, but no volunteers” situation? By the way, although Bitcoin Core had supported BIP32 several years ago, it uses hardened derivation for addresses, which makes it impossible for the watch-only side to derive new addresses for receiving/change, or used addresses…

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Is it recommended to have class methods return void on success, then return exception on failure?

I’m currently working with PHP and have been doing in and else inside a try and catch block. it looks like this try { if (!Class::classMethod()) { throw new Exception(“error!”); } if (!Class::anotherClassMethod()) { throw new Exception(“another type of error!”); } } catch (Exception $e) { // send error message to index.php as a readable…

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