Done by manual provided, but can not start it

[SFinctor]

-- Logs begin at Fri 2021-01-29 17:21:45 UTC, end at Thu 2022-09-15 22:57:20 UTC. --
Sep 15 22:38:41 bruny systemd[1]: Started Mail to Telegram Forwarder - Service for: 'mailToTelegramForwarder'.
Sep 15 22:38:41 bruny mailToTelegramForwarder[2961]: Traceback (most recent call last):
Sep 15 22:38:41 bruny mailToTelegramForwarder[2961]: File "/usr/local/bin/mailToTelegramForwarder", line 278, in
Sep 15 22:38:41 bruny mailToTelegramForwarder[2961]: class MailBody:
Sep 15 22:38:41 bruny mailToTelegramForwarder[2961]: File "/usr/local/bin/mailToTelegramForwarder", line 281, in MailBody
Sep 15 22:38:41 bruny mailToTelegramForwarder[2961]: images: typing.Optional[dict[str, MailAttachment]] = None
Sep 15 22:38:41 bruny mailToTelegramForwarder[2961]: TypeError: 'type' object is not subscriptable
Sep 15 22:38:41 bruny systemd[1]: [email protected]: Main process exited, code=exited, status=1/FAILURE
Sep 15 22:38:41 bruny systemd[1]: [email protected]: Failed with result 'exit-code'.
Sep 15 22:38:42 bruny systemd[1]: [email protected]: Scheduled restart job, restart counter is at 1.
Sep 15 22:38:42 bruny systemd[1]: Stopped Mail to Telegram Forwarder - Service for: 'mailToTelegramForwarder'.
Sep 15 22:38:42 bruny systemd[1]: Started Mail to Telegram Forwarder - Service for: 'mailToTelegramForwarder'.
Sep 15 22:38:42 bruny mailToTelegramForwarder[2987]: Traceback (most recent call last):
Sep 15 22:38:42 bruny mailToTelegramForwarder[2987]: File "/usr/local/bin/mailToTelegramForwarder", line 278, in
Sep 15 22:38:42 bruny mailToTelegramForwarder[2987]: class MailBody:
Sep 15 22:38:42 bruny mailToTelegramForwarder[2987]: File "/usr/local/bin/mailToTelegramForwarder", line 281, in MailBody
Sep 15 22:38:42 bruny mailToTelegramForwarder[2987]: images: typing.Optional[dict[str, MailAttachment]] = None
Sep 15 22:38:42 bruny mailToTelegramForwarder[2987]: TypeError: 'type' object is not subscriptable
Sep 15 22:38:42 bruny systemd[1]: [email protected]: Main process exited, code=exited, status=1/FAILURE
Sep 15 22:38:42 bruny systemd[1]: [email protected]: Failed with result 'exit-code'.
Sep 15 22:38:42 bruny systemd[1]: [email protected]: Scheduled restart job, restart counter is at 2.
Sep 15 22:38:42 bruny systemd[1]: Stopped Mail to Telegram Forwarder - Service for: 'mailToTelegramForwarder'.
Sep 15 22:38:42 bruny systemd[1]: Started Mail to Telegram Forwarder - Service for: 'mailToTelegramForwarder'.
Sep 15 22:38:42 bruny mailToTelegramForwarder[2990]: Traceback (most recent call last):
Sep 15 22:38:42 bruny mailToTelegramForwarder[2990]: File "/usr/local/bin/mailToTelegramForwarder", line 278, in
Sep 15 22:38:42 bruny mailToTelegramForwarder[2990]: class MailBody:
Sep 15 22:38:42 bruny mailToTelegramForwarder[2990]: File "/usr/local/bin/mailToTelegramForwarder", line 281, in MailBody
Sep 15 22:38:42 bruny mailToTelegramForwarder[2990]: images: typing.Optional[dict[str, MailAttachment]] = None
Sep 15 22:38:42 bruny mailToTelegramForwarder[2990]: TypeError: 'type' object is not subscriptable
Sep 15 22:38:42 bruny systemd[1]: [email protected]: Main process exited, code=exited, status=1/FAILURE
Sep 15 22:38:42 bruny systemd[1]: [email protected]: Failed with result 'exit-code'.
Sep 15 22:38:43 bruny systemd[1]: [email protected]: Scheduled restart job, restart counter is at 3.
Sep 15 22:38:43 bruny systemd[1]: Stopped Mail to Telegram Forwarder - Service for: 'mailToTelegramForwarder'.
Sep 15 22:38:43 bruny systemd[1]: Started Mail to Telegram Forwarder - Service for: 'mailToTelegramForwarder'.
Sep 15 22:38:43 bruny mailToTelegramForwarder[2993]: Traceback (most recent call last):

[awalon]

Hello,
this could be caused by an outdated Python3 version (similar to issue #14), please check that you used at least version 3.9.2.
Greets