cannot access com.atlassian.plugin.web.ContextProvider

[jacob delddd]

This is just based on the tutorial: "https://developer.atlassian.com/server/jira/platform/adding-content-to-the-jira-view-issue-page/"

package com.ebo.jira.webpanel;

import com.atlassian.jira.issue.Issue;
import com.atlassian.jira.plugin.webfragment.contextproviders.AbstractJiraContextProvider;
import com.atlassian.jira.plugin.webfragment.model.JiraHelper;
import com.atlassian.jira.user.ApplicationUser;

import java.sql.Timestamp;
import java.time.LocalDate;
import java.util.HashMap;
import java.util.Map;

import static java.time.temporal.ChronoUnit.DAYS;


//nottice that it now extends the abstract class AbstractjiracontextProvider and implenments the class getcontextmap method

public class webpanel extends AbstractJiraContextProvider{

  @Override
  public  Map<String, Object> getContextMap(ApplicationUser applicationUser, JiraHelper jiraHelper)
  {
    //The getContextMap method that we implemented needs to return a Map object with a key and value that represents
    // the number of days between the due date and the current date,
    // so that it can be used by other parts of the module.
    Map<String,Object> contextMap = new HashMap<>();
    Issue currentIssue = (Issue) jiraHelper.getContextParams().get("issue");
    Timestamp dueDate = currentIssue.getDueDate();

    if(dueDate != null) {
      LocalDate currentTimeInDays = null;
      LocalDate dueDateTimeInDays = null;
      currentTimeInDays = LocalDate.now();
      dueDateTimeInDays = dueDate.toLocalDateTime().toLocalDate();


      long daysAwayFromDueDateCalc = DAYS.between(currentTimeInDays, dueDateTimeInDays);
      contextMap.put("daysAwayFromDueDate", daysAwayFromDueDateCalc);
    }
    return contextMap;
  }

}

 So now i get the following errors: 

1/ Error:(21, 8) java: cannot access com.atlassian.plugin.web.ContextProvider
class file for com.atlassian.plugin.web.ContextProvider not found

2/Error:(23, 3) java: method does not override or implement a method from a supertype

I know that the tutorial is outdated, but don't think that this part of it is outdated.

Thanks in advance!

[Milnow5555]

Have anyone solved this?

[jacob delddd]

Had to skip it