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 ('8f02fa0c3f4ab5e024c3c8ee2063e9a1', -1, 1506016243, 1506016243, '6b1676f2', -8, 0, 0)

Line : 187
File : sessions.php