Unable to open the report designer for a only for specific URL. I’m trying to do this in a upgrade sandbox and facing this issue. Even I have reportdesigner access in the access rights.

Unable to open the report designer for a only for specific URL. I’m trying to do this in a upgrade sandbox and facing this issue. Even I have reportdesigner access in the access rights.

Best answer by BenjaminCrisman
In case it’s not related, can you display the full error message by hovering the mouse over it?
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