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 ('8adf3dc0ea1c07c635b2b22404951cc2', -1, 1542216341, 1542216341, '36524915', -4, 0, 0)

Line : 187
File : sessions.php