[Nightly] acme.sh Issues on Upgrade

Debian 10 Nightly15092020

When i upgrade ispconfig via ispconfig_update.sh with installed acme.sh (/root/.acme), i get following errors:°

Create new ISPConfig SSL certificate (yes,no) [no]: yes

cat: /usr/local/ispconfig/interface/ssl/ispserver.key: Zu viele Ebenen aus symbolischen Links
cat: /usr/local/ispconfig/interface/ssl/ispserver.crt: Zu viele Ebenen aus symbolischen Links
Symlink ISPConfig SSL certs to Postfix? (y,n) [y]: 
PHP Warning:  symlink(): File exists in /tmp/update_runner.sh.devDOEbnv3/install/lib/installer_base.lib.php on line 2911
PHP Warning:  symlink(): File exists in /tmp/update_runner.sh.devDOEbnv3/install/lib/installer_base.lib.php on line 2912

Symlink ISPConfig SSL certs to Pure-FTPd? Creating dhparam file may take some time. (y,n) [y]: 

Do you want to create SSL certs for your server? (y,n) [y]: 

PHP Warning:  symlink(): No such file or directory in /tmp/update_runner.sh.devDOEbnv3/install/lib/installer_base.lib.php on line 2874
PHP Warning:  symlink(): No such file or directory in /tmp/update_runner.sh.devDOEbnv3/install/lib/installer_base.lib.php on line 2875
cat: /usr/local/ispconfig/interface/ssl/ispserver.key: Zu viele Ebenen aus symbolischen Links |(eng:Too many layers of symbolic links)
cat: /usr/local/ispconfig/interface/ssl/ispserver.crt: Zu viele Ebenen aus symbolischen Links | (eng: Too many layers of symbolic links)
Symlink ISPConfig SSL certs to Postfix? (y,n) [y]: 
PHP Warning:  symlink(): No such file or directory in /tmp/update_runner.sh.devDOEbnv3/install/lib/installer_base.lib.php on line 2911
PHP Warning:  symlink(): No such file or directory in /tmp/update_runner.sh.devDOEbnv3/install/lib/installer_base.lib.php on line 2912

Symlink ISPConfig SSL certs to Pure-FTPd? Creating dhparam file may take some time. (y,n) [y]: 

Reconfigure Crontab? (yes,no) [yes]: