Many of the tips that I am going to give are from this excellent book that I want to recommend:

Informal guidelines for relation design:

If you have the Package name and/or the Class name

Using maven central repository listings

These are some maven central repository listings:

You can search by:

  • package name or by parts of the package. Try different combinations to see if there are good results
  • Package name or by parts of the Package + Class name

Example:

Input:

Search:

Please follow the steps

1. Test locally with docker

Build the docker image

Run the docker image

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.8.0:compile (default-compile) on project catpoint-parent: Fatal error compiling: error: invalid target release: 14 -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.8.0:compile (default-compile) on project catpoint-parent: Fatal error compiling

The complete error log can be consulted here.

Solution 1: Set the correct project jdk version in the IDEA

If the project’s jdk version is defined in…

Problem 1:

Error message

EnvAccessKeyNotFound: failed to find credentials in the environment

Cause: Not creating as as CircleCI project or context environment variables the AWS credentials.

Solution

to configure AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY and AWS_DEFAULT_REGION as CircleCI project or context environment variables.

In this tutorial we are going to follow the instructions of the following resources

This is my project’s repository.

Steps

  1. Create the CircleCI account

2. Create a GitHub repository

3. Create the basic project structure

Create a .circleci/config.yml in the project’s root directory

Add the…

Problem:

Error:

Cause

The msyql need to use the credential the teccdba credentials. The problem was that the tasksLinux_OS_Update was using the credential for teccadmin, the wrong credential.

Solution

Make sure that you are using the correct credential for MYSQL, Load Balancer and Web Server.

Make sure that the credentials in the Cloud-init are the same that you use in the tasks.

This is an example of the credentials in the Load Balancer’s Cloud-init. In the example the credential is superuser (in your case teccadmin or teccdba):

Read OpenSea’s docs

The best thing that you can do to learn how to do this is to go over the entire ERC721 Tutorial in OpenSea:

In here I want to highlight some relevant points and ideas from the tutorial.

1. Structuring your smart contract

It is very very very important that you adhere to the latest Open…

Git repository: https://github.com/dougvk/truffle3-frontend-example

  1. Download the code from the Git repository
  2. Start docker and run the command
docker-compose -f docker/docker-compose.yml up -d

3. List the running containers

docker container ls --all

4. Copy the CONTAINER ID for docker_truffle3_

5. once the container starts, find the hash of the truffle3_container service and…

Alvaro Andres Pinzon Cortes

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