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 ('3fe07b3e9cd6a2c89e62ab3a007c28a8', -1, 1506060711, 1506060711, '36e1278e', -4, 0, 0)

Line : 189
File : sessions.php