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 ('6c7b12f12ae2c3eb0d4c29536aebd86e', -1, 1550771977, 1550771977, '0354f3f6', 0, 0, 0)

Line : 187
File : sessions.php