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 ('75e07f8ad8b9efc90bc6111716c592b5', -1, 1524770767, 1524770767, '36e02ca8', 4, 0, 0)

Line : 187
File : sessions.php