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 ('525049d79553b8334aed7da799849912', -1, 1501223918, 1501223918, '369e1992', -4, 0, 0)

Line : 187
File : sessions.php