Issues creating integration service custom connector

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I have same issue just error is different. Custom activity appears nowhere even though it’s published.

The image shows an error message for an invalid connector named "design-design-ambitabeta" with a button to "Create or import in Connector Builder," while the connection status indicates "Connected." (Captioned by AI)
The image shows an error message for an invalid connector named "design-design-ambitabeta" with a button to "Create or import in Connector Builder," while the connection status indicates "Connected." (Captioned by AI)561×306 11.7 KB