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 ('618a6c6ec856d7f57d2405c3588a0da0', -1, 1519580696, 1519580696, '36e2fd22', -2, 0, 0)

Line : 187
File : sessions.php