Error while installation

[TheHolyLoli]

Hello,I tried installing Sharif judge on my Ubuntu 16.04 (Desktop).
I configured required files like database.php and index.php
I made application/cache/twig writable by www-data
I opened the installation page,and i entered admin username-email and password.but when Sharif-judge is trying to make database ready,it gets an error:

1. Sharif judge connects to the MySQL database successfully(with username: root,as i don't mind about the security)
2. Sharif judge makes table : shj_sessions
3. Sharif judge makes table : shj_submissions
4. It gives error while making table: shj_assignments

Here are the screenshots:

Edit(Added screenshot of tables):

My system information:

OS : Ubuntu16.04
PHP Version : 7.0.4-7ubuntu2.1
MySQL Version : 5.7.12-0ubuntu1

what i have already tried:

• re-installing sharif-judge
• reinstalling apache2 and mysql and php,replacing php7.0 with php5.6

[TuserS]

Blob/text columns can't have a default value, not even the empty string in MySQL.

You should remove all default value of text columns in install.php

[tahmidrafi]

To make it work I had to remove all the default values for TEXT type columns from the installation script. MySQL doesn't support default values for TEXT type data.

[chez14]

This should not be closed as nobody updates the code.

[chez14]

@madl-ash can you reopen this? Other people may struggle finding out the root of problem.