Bug in files /usr/local/ispconfig/interface/web/monitor/lib/lang/{all languages}.lng. There is no translation of "Database size" and "Show MySQL Database size" [+SOLVED]
Tab Monitor
The solution to the problem:
You need to add the lines
$wb['Database size'] = 'Database size'; $wb['Show MySQL Database size'] = 'Show MySQL Database size';
in files /usr/local/ispconfig/interface/web/monitor/lib/lang/{en, de, ru, etc}.lng