I am trying to upgrade from 2.2.6 to 2.3, but the updater doens't even start. I get this message in the log:
PHP Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 20480 bytes) in /vendor/composer/composer/src/Composer/Json/JsonFile.php on line 272
I havem 1024M of allocated memory. What can be the issue?