title: Problem with migration Joomla 1.5.26 to 3.x with jUpgradePro
body: <p>I need to migrate an old website witch is using Joomla 1.5 to Joomla 3.x.
  I updated Joomla to 1.5.26 and I decided to buy and use tool jUpgradePro from <a href="https://matware.com.ar/subscriptions/jupgradepro-subscription.html" rel="nofollow noreferrer">https://matware.com.ar/subscriptions/jupgradepro-subscription.html</a> .</p>
  
  <p>I configured everything and I'm trying to start migration but there's one problem and I need Your help.</p>
  
  <p>When I start using cmd of jupgradepro there's one error message after using command composer install.</p>
  
  <pre><code>Cannot update only a partial set of packages without a lock file present
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/VwajI.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/VwajI.png" alt="enter image description here"></a></p>
  
  <p>What can I do with this problem, any Issue? I was trying to search something in web, but finally have to ask You for help.</p>
  
  <p>One thing that I can say is that this example is a test so target domain is a subdomain (<a href="http://ernestdolowy.pl/projects/szpital/nowytest/" rel="nofollow noreferrer">http://ernestdolowy.pl/projects/szpital/nowytest/</a>) and source site has just empty test template, is that a problem? Joomla 3.x is well configured on subdomain.</p>
  
  <p>Finally I need to migrate Joomla 3.x to Wordpress but right now I have to solve this problem.</p>
  
  <p>Thank you in advance for your help :)</p>