getting java.lang.NullPointerException in cucumber selenium

Below is the error getting in running runner class file -

error in Console -  

@RegisterUser
Feature: Register User on automation practice online shopping portal

@RegisterUser @GoToSignUpPage:
Scenario: User create an account # src/test/resources/com/webautomation/feature/RegisterUsers.feature:5
Starting ChromeDriver 75.0.3770.140 (2d9f97485c7b07dc18a74666574f19176731995c-refs/branch-heads/3770@{#1155}) on port 32762
Only local connections are allowed.
Please protect ports used by ChromeDriver and related test frameworks to prevent access by malicious code.
Jul 13, 2019 1:04:09 PM org.openqa.selenium.remote.ProtocolHandshake createSession
INFO: Detected dialect: W3C
Given I open browsername1 # genericsteps.openBrowser1(String)
And I launch URL of Online Shopping portal # genericsteps.launchsite(String)
When I click on Sign-In Link_xpath # genericsteps.clicksigninlink(String)
I am on sign-up page
And I am at sign-up page # genericsteps.registerpage()
fname xpath ---//*[@id="email_create"]
fname ----someone@example123.com
When I enter the email_id at the email-id-xpath field # genericsteps.enteremail(String,String)
And click create_an_account_button_xpath # genericsteps.clickcreateanaccountbtn(String)
I am inside create an account page
Then I am taken to create an account page # genericsteps.intocreateanaccountpage()

@RegisterUser @EnterYourPersonalDetails
Scenario: Enter Personal and Address details # src/test/resources/com/webautomation/feature/RegisterUsers.feature:15
I am on create an account page
Given I am on create an account page # genericsteps.iamoncreateanaccountpage()
Salutation --Mr.
Objectkey.get(0)--- //*[@id="id_gender1"]
Objectkey.get(1)--- //*[@id="id_gender2"]
Salutation conditioned -- passed
exception occured ---java.lang.NullPointerException
When I select0 my salutation # genericsteps.select_salutation(String,String>)
fname xpath ---//*[@id="customer_firstname"]
fname ----Some
When enter1 fname at fname-xpath # genericsteps.fname(String,String)
java.lang.NullPointerException
at com.webautomation.webdriver.WebConnector.type(WebConnector.java:79)
at com.webautomation.step.genericsteps.fname(genericsteps.java:75)
at ?.enter1 fname at fname-xpath(file:src/test/resources/com/webautomation/feature/RegisterUsers.feature:19)

And enter2 lname at lname-xpath # genericsteps.lname(String,String)
And enter3 password at password-xpath # genericsteps.password(String,String)
And select4 day at day-name-select # genericsteps.day(String,String)
And select5 month at month-name-select # genericsteps.month(String,String)
And select6 year at year-name-select # genericsteps.year(String,String)
And enter7 company at company-xpath # genericsteps.company(String,String)
And enter8 address at address-xpath # genericsteps.address(String,String)
And enter9 city at city-xpath # genericsteps.city(String,String)
And select10 state at state-name-select # genericsteps.state(String,String)
And enter11 zipcode at zipcode-xpath # genericsteps.zipcode(int,String)
And select12 country at country-name-select # genericsteps.country(String,String)
And enter13 mob-number at mob-number-xpath # genericsteps.mobnumber(int,String)
And enter14 address-alias at address-alias-xpath # genericsteps.addressalias(String,String)
And click15 register-button-xpath # genericsteps.registerbutton(String)
Then I am taken to My Account page # genericsteps.registered()

Failure Trace - 

java.lang.NullPointerException
at com.webautomation.webdriver.WebConnector.type(WebConnector.java:79)
at com.webautomation.step.genericsteps.fname(genericsteps.java:75)
at ?.enter1 fname at fname-xpath(file:src/test/resources/com/webautomation/feature/RegisterUsers.feature:19)

----------------

Webconnector.java file code - 

package com.webautomation.webdriver;
import java.io.FileInputStream;
import java.util.List;
import java.util.Properties;
import java.util.concurrent.TimeUnit;

import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.openqa.selenium.ie.InternetExplorerDriver;
import org.openqa.selenium.support.ui.Select;

public class WebConnector {

WebDriver driver;
public String name;
public Properties prop;
// public readTestDataFromExcel readxl;


public WebConnector() {
try {
prop = new Properties();
FileInputStream fs = new FileInputStream(System.getProperty("user.dir")+"\\src\\test\\resources\\project.Properties");
prop.load(fs);
// readxl = new readTestDataFromExcel();
} catch (Exception e) {
e.printStackTrace();
}
}



public void openBrowser(String browserName) {

if(prop.getProperty(browserName).equals("Mozilla")) {
System.setProperty("webdriver.firefox.marionette","F:\\software\\BrowserDriver\\geckodriver.exe");
driver = new FirefoxDriver();
}else if(prop.getProperty(browserName).equals("Chrome")) {
System.setProperty("webdriver.chrome.driver","F:\\software\\BrowserDriver\\chromedriver.exe");
driver = new ChromeDriver();
} else if(prop.getProperty(browserName).equals("InternetExplorer")) {
System.setProperty("webdriver.ie.driver","F:\\software\\BrowserDriver\\IEDriverServer.exe");
driver = new InternetExplorerDriver();
}
driver.manage().window().maximize();
driver.manage().timeouts().implicitlyWait(20, TimeUnit.SECONDS);

}

public void navigate(String urlkey) {
driver.navigate().to(prop.getProperty(urlkey));
}

public void click(String objectkey) {
try {
driver.findElement(By.xpath(prop.getProperty(objectkey))).click();
}
catch (Exception e){
String existing_registered_email_id_error = "An account using this email address has already been registered. Please enter a valid password or request a new one.";
String invalid_email_id_error = "Invalid email address.";
WebElement existing_registered_email_id_error_Display_Area = driver.findElement(By.xpath("//*[@id=\"create_account_error\"]/ol/li"));
WebElement invalid_email_id_error_Display_Area = driver.findElement(By.xpath("//*[@id=\"create_account_error\"]/ol/li"));
if(existing_registered_email_id_error_Display_Area.getText().equalsIgnoreCase(existing_registered_email_id_error)){
System.out.println("Email id is already registed");
} else if (invalid_email_id_error_Display_Area.getText().equalsIgnoreCase(invalid_email_id_error)){
System.out.println("Entered Email id is invalid");
}
}
}

public void type(String objectkey, String data) {
System.out.println("fname xpath ---"+prop.getProperty(objectkey));
System.out.println("fname ----"+prop.getProperty(data));
String data1 = prop.getProperty(data);
driver.findElement(By.xpath(prop.getProperty(objectkey))).sendKeys(data1);
}

public void type(String objectkey, int data) {
String data_tostring = Integer.toString(data);
driver.findElement(By.xpath(prop.getProperty(objectkey))).sendKeys(prop.getProperty(data_tostring));
}

public void selectdropdown(String objectkey, String data) {

Select valuefromdropdown = new Select(driver.findElement(By.name(prop.getProperty(objectkey))));
valuefromdropdown.selectByVisibleText(data);
}

public void selectradioption(String data, List<String> Objectkey) {
System.out.println("Salutation --"+ prop.getProperty(data));
System.out.println("Objectkey.get(0)--- "+prop.getProperty(Objectkey.get(0)));
System.out.println("Objectkey.get(1)--- "+prop.getProperty(Objectkey.get(1)));
try {
if(prop.getProperty(data).contentEquals("Mr.")) {
System.out.println("Salutation conditioned -- passed");
driver.findElement(By.xpath(prop.getProperty(Objectkey.get(0)))).click();
System.out.println("Clicked 1.....");
}else {
System.out.println("Salutation conditioned -- failed");
driver.findElement(By.xpath(prop.getProperty(Objectkey.get(1)))).click();
System.out.println("Clicked 2.....");
}
}catch (Exception e) {
System.out.println("exception occured ---"+e);
}
}



}

---------------------

Feature file code - 

@RegisterUser
Feature: Register User on automation practice online shopping portal

@GoToSignUpPage:
Scenario: User create an account
Given I open browsername1
And I launch URL of Online Shopping portal
When I click on Sign-In Link_xpath
And I am at sign-up page
When I enter the email_id at the email-id-xpath field
And click create_an_account_button_xpath
Then I am taken to create an account page

@EnterYourPersonalDetails
Scenario: Enter Personal and Address details
Given I am on create an account page
When I select0 my salutation
|Mr-Salutation-xpath|Mrs-Salutation-xpath|
When enter1 fname at fname-xpath
And enter2 lname at lname-xpath
And enter3 password at password-xpath
And select4 day at day-name-select
And select5 month at month-name-select
And select6 year at year-name-select
And enter7 company at company-xpath
And enter8 address at address-xpath
And enter9 city at city-xpath
And select10 state at state-name-select
And enter11 zipcode at zipcode-xpath
And select12 country at country-name-select
And enter13 mob-number at mob-number-xpath
And enter14 address-alias at address-alias-xpath
And click15 register-button-xpath
Then I am taken to My Account page

#Examples:
#|salutation|fname |lname|password |day|month |year|company|address |city |state|zipcode|country |mob-number|address-alias|
#|Mr. |Nikhil|Gupta|password123|23 |August|1988|RBS |Cybercity|Gurugram|Texas|00001 |United States|9498070042|Office-Addr |

------------------

Generic STep Definition code below - 

package com.webautomation.step;

import java.util.List;

import com.webautomation.webdriver.WebConnector;

import io.cucumber.java.en.And;
import io.cucumber.java.en.Given;
import io.cucumber.java.en.Then;
import io.cucumber.java.en.When;

public class genericsteps {

WebConnector con;

public genericsteps(WebConnector con) {
this.con = con;
}

@Given("^I open ([^\"]*)$")
public void openBrowser1(String browserName){
// System.out.println("Opening Browser "+browserName);
con.openBrowser(browserName);
}

@And("^I launch ([^\"]*) of Online Shopping portal$")
public void launchsite(String URL) {
// System.out.println("Navigate to Automation Practice shopping portal" + URL);
con.navigate(URL);
}

@When ("^I click on Sign-In ([^\"]*)$")
public void clicksigninlink(String link) {
// System.out.println("Clicked sign-in option" + link);
con.click(link);
}

@And("^I am at sign-up page$")
public void registerpage() {
System.out.println("I am on sign-up page");
}


@When("^I enter the ([^\"]*) at the ([^\"]*) field$")
public void enteremail(String emailid, String email_field_locator) {
// System.out.println("enter the email id"+emailid+ "email xpath - "+email_field_locator);
con.type(email_field_locator, emailid);

}

@And("^click ([^\"]*)$")
public void clickcreateanaccountbtn(String create_an_account_button_xpath) {
// System.out.println("Clicked create an account button");
con.click(create_an_account_button_xpath);
}

@Then("^I am taken to create an account page$")
public void intocreateanaccountpage() {
System.out.println("I am inside create an account page");
}

@Given ("^I am on create an account page$")
public void iamoncreateanaccountpage() {
System.out.println("I am on create an account page");
}

@When ("^I select0 my ([^\"]*)$")
public void select_salutation(String salutation_value, List<String> radio_option_xpath) {
con.selectradioption(salutation_value, radio_option_xpath);
}
@When ("^enter1 ([a-zA-Z]{1,}) at ([^\"]*)$")
public void fname(String fname_var, String fname_xpath) {
con.type(fname_xpath, fname_var);

}
@And ("^enter2 ([a-zA-Z]{1,}) at ([^\"]*)$")
public void lname(String lname_var, String lname_xpath) {
con.type(lname_xpath, lname_var);
}
@And ("^enter3 ([^\"]*) at ([^\"]*)$")
public void password(String password_var, String password_xpath) {
con.type(password_xpath, password_var);
}
@And ("^select4 ([a-zA-Z0-9]{1,}) at ([^\"]*)$")
public void day(String day_var, String day_name_select) {
// String day_var_tostring = Integer.toString(day_var);
con.selectdropdown(day_name_select, day_var);
}
@And ("^select5 ([a-zA-Z]{1,}) at ([^\"]*)$")
public void month(String month_var, String month_name_select) {
con.selectdropdown(month_name_select, month_var);
}
@And ("^select6 ([a-zA-Z0-9]{1,}) at ([^\"]*)$")
public void year(String year_var, String year_name_select) {
// String year_var_tostring = Integer.toString(year_var);
con.selectdropdown(year_name_select, year_var);
}
@And ("^enter7 ([a-zA-Z0-9]{1,}) at ([^\"]*)$")
public void company(String company_var, String company_xpath) {
con.type(company_xpath, company_var);
}
@And ("^enter8 ([a-zA-Z0-9]{1,}) at ([^\"]*)$")
public void address(String address_var, String address_xpath) {
con.type(address_xpath, address_var);
}
@And ("^enter9 ([a-zA-Z]{1,}) at ([^\"]*)$")
public void city(String city_var, String city_xpath) {
con.type(city_xpath, city_var);
}
@And ("^select10 ([a-zA-Z]{1,}) at ([^\"]*)$")
public void state(String state_var, String state_name_select) {
con.selectdropdown(state_name_select, state_var);
}
@And ("^enter11 ([^\"]*) at ([^\"]*)$")
public void zipcode(int zipcode_var, String zipcode_xpath) {
// String zipcode_var_tostring = Integer.toString(zipcode_var);
con.type(zipcode_xpath, zipcode_var);
}
@And ("^select12 ([a-zA-Z]{1,}) at ([^\"]*)$")
public void country(String country_name_var, String county_name_select) {
con.selectdropdown(county_name_select, country_name_var);

}
@And ("^enter13 ([^\"]*) at ([^\"]*)$")
public void mobnumber(int mob_number_var, String mob_number_xpath) {
// String mob_number_var_tostring = Integer.toString(mob_number_var);
con.type(mob_number_xpath, mob_number_var);

}
@And ("^enter14 ([^\"]*) at ([^\"]*)$")
public void addressalias(String address_alias_var, String address_alias_xpath) {
con.type(address_alias_xpath, address_alias_var);

}
@And ("^click15 ([^\"]*)$")
public void registerbutton(String register_button_var) {
con.click(register_button_var);
}
@Then ("^I am taken to My Account page$")
public void registered() {
System.out.println("Successfully registered...!!");
}



// @Before("@GoToSignUpPage")
// public void init() {
// System.out.println("*************Init***************");
// }
//
//
// @After("@GoToSignUpPage")
// public void quit() {
// System.out.println("***********Quit**************");
// }

}

-----------------------------

Properties file - 

browsername1=Chrome
URL=http://automationpractice.com
Link_xpath=//*[@id="header"]/div[2]/div/div/nav/div[1]/a
email_id=someone@example123.com
email-id-xpath=//*[@id="email_create"]
create_an_account_button_xpath=//*[@id="SubmitCreate"]/span
email_id_already_registered_error_msg=//*[@id="create_account_error"]/ol/li
email_id_invalid=//*[@id="create_account_error"]/ol/li
Mr-Salutation-xpath=//*[@id="id_gender1"]
Mrs-Salutation-xpath=//*[@id="id_gender2"]
fname-xpath=//*[@id="customer_firstname"]
lname-xpath=//*[@id="customer_lastname"]
password-xpath=//*[@id="passwd"]
day-name-select="days"
month-name-select="months"
year-name-select="years"
company-xpath=//*[@id="company"]
address-xpath=//*[@id="address1"]
city-xpath=//*[@id="city"]
state-name-select="id_state"
zipcode-xpath=//*[@id="postcode"]
country-name-select="id_country"
mob-number-xpath=//*[@id="phone_mobile"]
address-alias-xpath=//*[@id="alias"]
register-button_xpath=//*[@id="submitAccount"]/span
salutation=Mr.
fname=Some
lname=One
password=password123
day=12
month=August
year=2000
company=RBS
address=Cybercity
city=Gurugram
state=Texas
zipcode=00001
country="United States"
mob-number=9498070042
address-alias=Office-Addr