Unable to delete nodes at sites due to ModifyError

Hi. I am unable to delete nodes at a slice due to ModifyError. The slice ID is 844a7ecc-e1c0-4b07-bc3b-1809f826fc0a. I would be highly obliged if you could guide me through the process. I am getting the following error for the following set of commands:

slice = fablib.get_slice(name=”Tailscale_Mesh_VPN”)
node_to_del = slice.get_node(name=”MICH_3D”)
#node_to_del.delete()
net1 = slice.get_network(name=”interconnect4″)
net1.delete()
slice.submit()

Exception: Failed to submit slice: Status.FAILURE, (500)
Reason: INTERNAL SERVER ERROR
HTTP response headers: HTTPHeaderDict({'Server': 'nginx/1.21.6', 'Date': 'Sun, 24 Nov 2024 23:59:11 GMT', 'Content-Type': 'text/html; charset=utf-8', 'Content-Length': '274', 'Connection': 'keep-alive', 'Access-Control-Allow-Credentials': 'true', 'Access-Control-Allow-Headers': 'DNT, User-Agent, X-Requested-With, If-Modified-Since, Cache-Control, Content-Type, Range, Authorization', 'Access-Control-Allow-Methods': 'GET, POST, PUT, PATCH, DELETE, OPTIONS', 'Access-Control-Allow-Origin': '*', 'Access-Control-Expose-Headers': 'Content-Length, Content-Range, X-Error', 'X-Error': 'Unable to modify Slice# 844a7ecc-e1c0-4b07-bc3b-1809f826fc0a that is not yet stable, try again later'})
HTTP response body: b'{\n    "errors": [\n        {\n            "details": "Unable to modify Slice# 844a7ecc-e1c0-4b07-bc3b-1809f826fc0a that is not yet stable, try again later",\n            "message": "Internal Server Error"\n        }\n    ],\n    "size": 1,\n    "status": 500,\n    "type": "error"\n}'