api server internal error http 500

[justemu]

steps to reproduce:

1. sudo docker-compose up -d
2. use anything to visit the api server. e.g. curl http://ipaddress:8080. It will return an internal server error or http 500.
3. docker-compose exec app-zotero /bin/bash ; and more /var/log/apache2/error.log; here is the caught error:

[Thu Aug 05 23:38:51.744664 2021] [php7:warn] [pid 291] [client 192.168.2.211:50101] PHP Warning: require(/var/www/zotero/vendor/autoload.php): failed to open stream: No such file or directory in /var/www/zotero/include/header.inc.php on line 142
[Thu Aug 05 23:38:51.744705 2021] [php7:error] [pid 291] [client 192.168.2.211:50101] PHP Fatal error: require(): Failed opening required '/var/www/zotero/vendor/autoload.php' (include_path='../include') in /var/www/zotero/include/header.inc.php on line 142
[Thu Aug 05 23:43:44.313958 2021] [php7:error] [pid 293] [client 192.168.2.211:61184] PHP Fatal error: Uncaught Error: Class 'Aws\Sdk' not found in /var/www/zotero/include/header.inc.php:239\nStack trace:\n#0 {main}\n thrown in /var/www/zotero/include/header.inc.php on line 239

It seems a bug in wireding up with Aws\Sdk. or it there file-missing in the vendor directory?