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<b>Warning</b>:  session_start(): open(/var/lib/php/sessions/sess_2iuthfrr2qsonm93gm9di9hp9i, O_RDWR) failed: No space left on device (28) in <b>/var/www/tb-usercake/models/config.php</b> on line <b>51</b><br />
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<b>Warning</b>:  session_start(): Failed to read session data: files (path: /var/lib/php/sessions) in <b>/var/www/tb-usercake/models/config.php</b> on line <b>51</b><br />
static S _javaCommand() {
  try answer trim(loadTextFile(javaxDataDir("java-command.txt")));
  S javaHome = System.getProperty("java.home");
  if (nempty(javaHome)) {
    File f = new File(javaHome);
    File f = oneOfTheFiles(
      newFile(f, "bin", "java"),
      newFile(f, "bin", java.exe"));
    if (f != null) ret f2s(f);
  }
  if (isOnPATH("java")) ret "java";
  fail("No java command found");
}