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 ('22ee26a9b484e7933fe5d5b8ec5a8b1f', -1, 1501001512, 1501001512, '369e0798', 4, 0, 0)

Line : 187
File : sessions.php