installation failled with weewx 4.5.1 using python 3 on raspberry pi

[iv1-infovista]

Hi
i tried the following after getting all file in a zip

pi@raspberrypi:/home/weewx $ bin/wee_extension --install=/home/pi/Downloads/wxWmr500-main.zip

and i have this error

zip
Request to install '/home/pi/Downloads/wxWmr500-main.zip'
Extracting from zip archive /home/pi/Downloads/wxWmr500-main.zip
Traceback (most recent call last):
  File "/home/weewx/bin/wee_extension", line 88, in <module>  main()
  File "/home/weewx/bin/wee_extension", line 80, in main  ext.install_extension(options.install)
  File "/home/weewx/bin/weecfg/extension.py", line 125, in install_extension self.install_from_dir(extension_dir)
  File "/home/weewx/bin/weecfg/extension.py", line 146, in install_from_dir installer_path, installer = weecfg.get_extension_installer(
  File "/home/weewx/bin/weecfg/__init__.py", line 1866, in get_extension_installer __import__('install')
  File "/var/tmp/wxWmr500-main/install.py", line 26
    config={
    ^
SyntaxError: expression cannot contain assignment, perhaps you meant "=="?

Do i missed something ?