Contact Form doesn't work

Hello, dear support.
I have some problems with my contact form.

I have this error, when i try to click "Submit":

{ "alert": "error", "message": "Please Fill up all the Fields and Try Again." }

I don't change anything in sendemail.php, i only change $toemails array

<form class="nobottommargin ast-contact-form" id="template-contactform" name="template-contactform" action="include/sendemail.php" method="post">

						<div class="row clearfix">
								<div class="col-lg-9 divcenter center sect7cont">
										<div class="form-process"></div>
										<div class="col_one_third">
											<input type="text" id="template-contactform-name" name="template-contactform-name" value="" class="sm-form-control required ast-cf-input" placeholder="Имя" />
										</div>
										<div class="col_one_third">
											<input type="text" id="template-contactform-phone" name="template-contactform-phone" value="" class="sm-form-control required ast-cf-input" placeholder="Телефон"  />
										</div>
										<div class="col_one_third col_last">
											<textarea class="required sm-form-control ast-cf-input" id="template-contactform-message" name="template-contactform-message" rows="1" cols="30" placeholder="Ваш вопрос" ></textarea>
										</div>
								</div>

								<div class="col_full hidden">
									<input type="text" id="template-contactform-botcheck" name="template-contactform-botcheck" value="" class="sm-form-control" />
								</div>

								<div class="col-lg-12 divcenter center sect7cont">
									<div class="sect5btn">
										<button type="submit" id="template-contactform-submit" name="template-contactform-submit" value="submit">Записаться</button>
									</div>
								</div>
						</div>
					</form>

What problem can it be?
Thanks for your help.