Error in phpMyAdmin after updating to v4.8.0: The $cfg['TempDir'] (./tmp/) is not accessible

Question

phpMyAdmin worked fine with v4.7.9. Now after updating to v4.8.0 today (replacing the old phpmyadmin folder against the new one) I\'m getting this mess

Answer 1

If the folder already exists for example from a previous installation:

chmod -R 777 PATH_TO_FOLDER

Therefore permission on subdirectories are also modified (recursively).