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 ('c356e71e2328390560d67c6fc8aca0cf', -1, 1550774634, 1550774634, '0354f3f6', 15, 0, 0)

Line : 187
File : sessions.php