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 ('9cbc5548ebc71a4f0b9cf30fb3cc14a4', -1, 1545200092, 1545200092, '3437b173', 15, 0, 0)

Line : 187
File : sessions.php