FanControl isn't really doing anything

[kompas1]

So I cloned the fan.py from you and added the line in the config file which in my case on linuxmint 20 is /etc/thinkfan.conf but whenever i try to change the speed via fan.py i get the following result (example with trying to set to level 2):
tee: /proc/acpi/ibm/fan: Das Argument ist ungültig Exception in Tkinter callback Traceback (most recent call last): File "/usr/lib/python3.8/tkinter/__init__.py", line 1883, in __call__ return self.func(*args) File "fan.py", line 47, in <lambda> tk.Button(row1, text=str(i), command=lambda x=i: set_speed(x)).grid( File "fan.py", line 29, in set_speed return subprocess.check_output( File "/usr/lib/python3.8/subprocess.py", line 411, in check_output return run(*popenargs, stdout=PIPE, timeout=timeout, check=True, File "/usr/lib/python3.8/subprocess.py", line 512, in run raise CalledProcessError(retcode, process.args, subprocess.CalledProcessError: Command 'echo level 2 | sudo tee "/proc/acpi/ibm/fan"' returned non-zero exit status 1.
I have no idea how to solve that and it drives me crazy because the gui is a wonderful idea and i would like to use it but, it seems like it doesn't