Errors after kanji update

Another type of error:
A PHP Error was encountered

Severity: Notice

Message: Undefined index: Question

Filename: controllers/practice.php

Line Number: 245
A PHP Error was encountered

Severity: Notice

Message: Trying to get property of non-object

Filename: controllers/practice.php

Line Number: 245
A PHP Error was encountered

Severity: Warning

Message: shuffle() expects parameter 1 to be array, boolean given

Filename: controllers/practice.php

Line Number: 246
A PHP Error was encountered

Severity: Notice

Message: Undefined index: Question

Filename: controllers/practice.php

Line Number: 251
A PHP Error was encountered

Severity: Notice

Message: Trying to get property of non-object

Filename: controllers/practice.php

Line Number: 251
A PHP Error was encountered

Severity: Notice

Message: Undefined variable: Question

Filename: practice/random_question_view.php

Line Number: 2
A PHP Error was encountered

Severity: Notice

Message: Trying to get property of non-object

Filename: practice/random_question_view.php

Line Number: 2
">
A PHP Error was encountered

Severity: Notice

Message: Undefined variable: Question

Filename: practice/random_question_view.php

Line Number: 51
A PHP Error was encountered

Severity: Notice

Message: Trying to get property of non-object

Filename: practice/random_question_view.php

Line Number: 51
0% (0 correct | 0 wrong) status: new ・ latest encounter: never

Practice Settings:
Level settings not saved by clicking, always reverts to default (only the latest Level [Level 3] is enabled).

yeah im getting these errors too :(

Hello,

I have fixed this problem few days ago...
and I'm really sorry for this.

Please tell me if this problem still occur.

Thank You,
bn