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 ('f7223a0cf6cfdbb68635c4c8a2c34b61', -1, 1513052485, 1513052485, '36eaf776', 27, 0, 0)

Line : 211
File : sessions.php