Akash Mittal

579 posts

This is Akash Mittal, an overall computer scientist. He is in software development from more than 10 years and worked on technologies like ReactJS, React Native, Php, JS, Golang, Java, Android etc. Being a die hard animal lover is the only trait, he is proud of.

ImportError: cannot import name ‘escape’ or ‘markup’ from ‘jinja2’

Akash Mittal
October 18, 2022

According to Jinja project, escape and markup should be imported from MarkupSafe. These functions are removed from jinja version 3.1.0. If you are using jinja version <3.1.0 or flask version…

TypeError: this.getOptions is not a function – Code Example

Akash Mittal
October 17, 2022

If you are using less-loader v8.0.0 or sass-loader v11.0.0 along with webpack version <5 then you will encounter “TypeError: this.getOptions is not a function” error. This is because from v8…

Pulling without specifying how to reconcile divergent branches discouraged

Akash Mittal
October 15, 2022

You pulled from git using command git pull origin master and got a warning – “Pulling without specifying how to reconcile divergent branches is discouraged“ in this form – This…

How to merge multiple dataframes in Python Pandas? Code Example

Akash Mittal
October 14, 2022

Merging dataframes in Python Pandas is possible through merge() function. The format is like this – Suppose you have two dataframes – df1 and df2 – And you want to…

Docker invalid reference format: repository name must be lowercase

Akash Mittal
October 13, 2022

Invalid reference format means that docker wants to access an image but couldn’t. This could be due to a number of reasons like the repository doesn’t exist or url is…

TypeError: Descriptors cannot not be created directly protoc >= 3.19.0

Akash Mittal
October 12, 2022

A breaking upgrade in protobuf from version 4.21.0 broke multiple Google cloud client libraries and leads to typeerror: descriptors cannot not be created directly. The solutions to this problem are…

Command not available when running Angular CLI outside workspace

Akash Mittal
October 11, 2022

Run commands from root path of your project in terminal to resolve “Error: This command is not available when running the Angular CLI from outside the workspace“. What is project…

Create reusable checkbox component in reactjs and store state in redux?

Akash Mittal
October 9, 2022

A reusable checkbox component can help you in displaying custom checkbox in your project at multiple places. This will speedup your process of creating checkboxes multiple times throughout application design.…

linux virtual private gateway

Why Linux Virtual Private Gateway is best for your online security?

Akash Mittal
October 7, 2022

Do you know, what is the most obvious way to improve your online security? Disabling third-party applications that are trying to compromise your system. It sounds simple, but with the…

Error missing list of packages to add to your project – Code Example

Akash Mittal
October 6, 2022

Error missing list of packages to add to your project is raised by yarn add command. This happens when you forget to mention a package name. The solution is to…

What is ConfusionMatrixDisplay in SciKit Python? Code Example

Akash Mittal
October 6, 2022

ConfusionMatrixDisplay is a SciKit function which is used to plot confusion matrix data. Where, confusion matrix is used to evaluate the output of a classifier on iris dataset. This confusion…

Execution failed for task ‘:compileJava’. > invalid source release: 11

Akash Mittal
October 6, 2022

To resolve Execution failed for task ‘:compileJava’. > invalid source release:11 error, we need to check if gradle is referencing the correct version of java. Solution 1. Set JDK version…

4 reasons for “curl no url specified” error – Code Examples

Akash Mittal
October 3, 2022

We get curl no url specified error due to reasons like we forgot to provide url or the command broke in the middle because of multi lines or a flag…

How to stop PING command in Linux & Windows? Code Example

Akash Mittal
October 2, 2022

Use Ctrl + C or Ctrl + | or Ctrl + Shift + C to stop or terminate PING command in Linux and Windows. PING is a terminal and command…

How to send delete request using CURL? Code Example

Akash Mittal
October 2, 2022

Use curl –request DELETE url command to send delete request using CURL. CURL is a command line utility which is used to transfer data from client to server. It is…

How to set ssh key permissions in linux? Code Example

Akash Mittal
October 1, 2022

In order to set ssh key permissions in linux, we first need to know the correct permissions to assign. Without secure permissions your system will be open to attacks. So,…

what utility is equivalent to the pathping command on linux system?

Akash Mittal
October 1, 2022

mtr is the linux utility which is equivalent to the pathping command on windows system. So whatever pathping command does on windows, mtr does the same on linux. In this…

Temporary failure in name resolution in DNS lookup – Code Example

Akash Mittal
September 29, 2022

DNS is the domain name binding with ip address. Every website on internet is recognized by the ip-address of the server on which it is running. Domain name is the…

Permission Denied (publickey,gssapi-keyex,gssapi-with-mic) sshd_config

Akash Mittal
September 29, 2022

While trying to ssh a host you might encounter an error – Permission Denied (publickey, gssapi-keyex, gssapi-with-mic). This says that you are not allowed to access the host via ssh.…

Git unexpected disconnect while reading sideband packet – Code Example

Akash Mittal
September 27, 2022

Suppose you are downloading a 50GB movie and you have 1MBps or 8mbps connection. It will take around 50 x 1024 seconds. That is, around 15 hours. In these 15…