I would remove the lever pivot screw and then withdraw the bolt to the rear if I could, then inspect the interior, especially the ejector installation inside the left receiver wall, then the locking lug - which should be "down", out of the bolt's travel path.
If you can't get the bolt out, it'll need to come apart - remove the rear tang screw/buttstock, and drop the bottom unit via removing the screws at the action front bottom and sides - after relieving the mainspring pressure on the hammer.
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