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 ('8b0464ef6fd09fff3f854fd2949ed1ab', -1, 1519380305, 1519380305, '36e24c1b', 11, 0, 0)

Line : 187
File : sessions.php