Unable to share folders/files (further sharing not allowed)

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Nextcloud version (eg, 20.0.5): 21.0.1
Operating system and version (eg, Ubuntu 20.04): Ubuntu 20.04.1
Apache or nginx version (eg, Apache 2.4.25): apt is saying both apache and nginx need to be installed first while the snap install fixed the install and setup of the website
PHP version (eg, 7.4): 7.4.18 while 8.0.7 is the latest running on my ubuntu setup

The issue you are facing: somehow I cannot share externally. it keeps on saying that it is disabled/not allowed and I can’t seem to figure out what settings are set wrongly that are causing this.

Is this the first time you’ve seen this error? (Y/N): n

Steps to replicate it:

  1. installed next cloud a few months ago with the installation guide, but nextcloud is complaining that imagick is not installed while ubuntu says it is
php-imagick is already the newest version (3.4.4+php8.0+3.4.4-7+ubuntu20.04.1+deb.sury.org+1).
  1. couldn’t share

The output of your Nextcloud log in Admin > Logging:

Error	PHP	Error: Trying to access array offset on value of type bool at /snap/nextcloud/28088/htdocs/apps/files_external/lib/Lib/Storage/SFTP.php#335		2021-06-07T15:03:45+0200
Error	PHP	Error: Trying to access array offset on value of type bool at /snap/nextcloud/28088/htdocs/apps/files_external/lib/Lib/Storage/SFTP.php#331		2021-06-07T15:03:45+0200

The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!):

[PHP]
engine = On
short_open_tag = Off
precision = 14
output_buffering = 4096
zlib.output_compression = Off
implicit_flush = Off
unserialize_callback_func =
serialize_precision = -1
disable_functions = pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare,
disable_classes =
zend.enable_gc = On
zend.exception_ignore_args = On
expose_php = Off
max_execution_time = 30
max_input_time = 60
memory_limit = 128M
error_reporting = E_ALL & ~E_DEPRECATED & ~E_STRICT
display_errors = Off
display_startup_errors = Off
log_errors = On
log_errors_max_len = 1024
ignore_repeated_errors = Off
ignore_repeated_source = Off
report_memleaks = On
variables_order = "GPCS"
request_order = "GP"PASTE HERE
register_argc_argv = Off
auto_globals_jit = On
post_max_size = 8M
auto_prepend_file =
auto_append_file =
default_mimetype = "text/html"
default_charset = "UTF-8"
doc_root =
user_dir =
enable_dl = Off
file_uploads = On
upload_max_filesize = 2M
max_file_uploads = 20
allow_url_fopen = On
allow_url_include = Off
default_socket_timeout = 60
[CLI Server]
cli_server.color = On
[Pdo_mysql]
pdo_mysql.default_socket=
[Phar]
[mail function]
SMTP = localhost
smtp_port = 25
mail.add_x_header = Off
[ODBC]
odbc.allow_persistent = On
odbc.check_persistent = On
odbc.max_persistent = -1
odbc.max_links = -1
odbc.defaultlrl = 4096
odbc.defaultbinmode = 1
[MySQLi]
mysqli.max_persistent = -1
mysqli.allow_persistent = On
mysqli.max_links = -1
mysqli.default_port = 3306
mysqli.default_socket =
mysqli.default_host =
mysqli.default_user =
mysqli.default_pw =
mysqli.reconnect = Off
[mysqlnd]
mysqlnd.collect_statistics = On
mysqlnd.collect_memory_statistics = Off
[PostgreSQL]
pgsql.allow_persistent = On
pgsql.auto_reset_persistent = Off
pgsql.max_persistent = -1
pgsql.max_links = -1
pgsql.ignore_notice = 0
pgsql.log_notice = 0
[bcmath]
bcmath.scale = 0
[Session]
session.save_handler = files
session.use_strict_mode = 0
session.use_cookies = 1
session.use_only_cookies = 1
session.name = PHPSESSID
session.auto_start = 0
session.cookie_lifetime = 0
session.cookie_path = /
session.cookie_domain =
session.cookie_httponly =
session.cookie_samesite =
session.serialize_handler = php
session.gc_probability = 0
session.gc_divisor = 1000
session.gc_maxlifetime = 1440
session.referer_check =
session.cache_limiter = nocache
session.cache_expire = 180
session.use_trans_sid = 0
session.sid_length = 26
session.trans_sid_tags = "a=href,area=href,framePASTE HERE=src,form="
session.sid_bits_per_character = 5
[Assertion]
zend.assertions = -1
[Tidy]
tidy.clean_output = Off
[soap]
soap.wsdl_cache_enabled=1
soap.wsdl_cache_dir="/tmp"
soap.wsdl_cache_ttl=86400
soap.wsdl_cache_limit = 5
[ldap]
ldap.max_links = -1

The output of your Apache/nginx/system log in /var/log/____:

can't find any apache or nginx logs in `/var/log/`

can somebody please help me with this? because it would be nice if I can create some shares…