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 ('c0b5a06a8c8e429c76d709ad77e2eb99', -1, 1519459900, 1519459900, '365acab8', 5, 0, 0)

Line : 187
File : sessions.php