Fatal error: Uncaught PDOException: SQLSTATE[23000]: Integrity constraint violation: 1048 Column 'Kategorie' cannot be null in /volume1/web/Volkssolaranlage/class/session.php:47
Stack trace:
#0 /volume1/web/Volkssolaranlage/class/session.php(47): PDOStatement->execute(Array)
#1 /volume1/web/Volkssolaranlage/class/session.php(27): Sitzung->insert_db()
#2 /volume1/web/Volkssolaranlage/class/session.php(19): Sitzung->generate_SID()
#3 /volume1/web/Volkssolaranlage/index.php(49): Sitzung->__construct(NULL, NULL, Object(PDO))
#4 {main}
  thrown in /volume1/web/Volkssolaranlage/class/session.php on line 47