phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1114 The table 'phpbb_sessions' is full

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('41e29fb2c7fa1fd3bd67235c79a6ea0e', -1, 1467308580, 1467308580, '3651ed88', -1, 0, 0)

Line : 187
File : sessions.php