I can replicate this error with the version that is available from the QGIS plugin manager.
The v2.9.0 tagged release on both the public QGIS marketplace and our speckle-qgis is also not working.
However, I can also help you manually install our most recent version (2.9.3) and get you up and running. The latest code available is functional. ![]()
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Uninstall the broken Speckle plugin from the manager

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Open your active User profile directory

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Navigate to the plugins directory

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Download the
.zipfrom the main branch v2.9.3 on thespeckle-gisGitHub repo into the plugins folder -
Expand the Zip

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Restart QGIS
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You can now enable the Speckle plugin in the manager. Activating it will pause as it downloads dependencies (specklepy)

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ENJOY!
