问为什么我不能把我的html页面上的数据

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throw err; // Rethrow non-MySQL errors
      ^

Error: ER_DUP_ENTRY: Duplicate entry '0' for key 'PRIMARY'

const connection = mysql.createConnection({
  host: "localhost",
  user: "root",
  password: "",
  database: "new_schema",
});
app.use(bodyParser.urlencoded({ extended: true }));
connection.query(
  "SELECT * FROM new_schema.new_table",
  function (err, rows, fields) {
    if (!err) console.log("The solution is: ", rows);
    else console.log("Error while performing Query.");
  }
);
app.post("/myaction", function (request, response, next) {
  var email = request.body.email;
  var pass = request.body.pass;
  var query = `INSERT INTO new_schema.new_table (email,pass) VALUES ("${email}","${pass}")`;
  connection.query(query, function (error, data) {
    if (error) {
      throw error;
    } else {
      response.redirect("/home");
    }
  });
});

                <h2 class="email">Please sign up</h2>
                <label for="email" class="sr-only">Your Email address</label>
                <input type="email" id="email" name="email" class="form-control" placeholder="Email address" required="" autofocus="">
                <label for="pass" class="sr-only">New Password</label>
                <input type="password" id="pass" class="form-control" name="pass" placeholder="Password" required="">
                
                <button id="btnSignIn" class="btn btn-lg btn-primary btn-block" type="submit">Register</button>
              </form>