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 ('02c8cc88ee2a767c77b1b9d28bd9d7b9', -1, 1505957596, 1505957596, '36a2dad6', 7, 0, 0)

Line : 187
File : sessions.php