Dependency 'com.github.pagehelper:pagehelper:5.1.4' not found

The error message "Dependency 'com.github.pagehelper:pagehelper:5.1.4' not found" typically occurs when the specified dependency cannot be found in the repository you are using. Please make sure you have added the correct Maven or Gradle dependency to your project's configuration.

If you are using Maven, you can add the following dependency to your `pom.xml` file:

<dependency>
    <groupId>com.github.pagehelper</groupId>
    <artifactId>pagehelper</artifactId>
    <version>5.1.4</version>
</dependency>

If you are using Gradle, you can add the following dependency to your `build.gradle` file:

implementation 'com.github.pagehelper:pagehelper:5.1.4'

After adding the dependency, make sure to sync or refresh your project to download the required dependencies from the configured repository.