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 ('90a4b9976c76953e24ed7a7209d0e0b9', -1, 1502889237, 1502889237, '3691442d', 10, 0, 0)

Line : 187
File : sessions.php