I don't have any theme on my page. Just plain text.
PermalinkFatal error: Call to undefined method Zend_Cache_Core::getMetadatas() in /virtual/pl/h2/mate/new/concrete/libraries/cache.php on line 123
which means that some files weren't uploaded/installed correctly. Try reuploading and installing concrete5.
I would recommend uploading the zipped package. Then use your cpanel's "legacy" file manager to unzip the package.
If you keep searching these forums you will find people with the same issue (I had this on one site I did - it was never officially solved however if I used Concrete 5.3 I could get it to work which makes me think the problem is with your hosting environment).
Good luck
/config
/files (Choose recursive to files and sub-dir since you are using filezilla)
/packages.
Once the permissions are set esp the /files dir re-load site and it should work.
/// $metadata = $cache->getMetadatas(Cache::key($type, $id));
$metadata = $cache->getBackend()->getMetadatas(Cache::key($type, $id));
in file: /virtual/pl/h2/mate/new/concrete/libraries/cache.php
it is now working fine
If you can pm me user and pass I can take a look.