I tired to instal this plugin in PC and it works perfect. Today I have tried to instal this plugin on my web and this announcement appeared:

The plugin can not be activated, because of fatal error

Fatal error: Allowed memory size of 47185920 bytes exhausted (tried to allocate 71 bytes) in /home/data/html/cero.sk/public_html/_sub/tenis/wp-includes/pomo/mo.php on line 206

Does enybody know, what can be the reason. Is it something wrong with server permission and restrictions?
Thanks