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 ('45e8e9ebf555c89a2e46c9f00f87991d', -1, 1503407169, 1503407169, '36c46576', 17, 0, 0)

Line : 187
File : sessions.php