updated check

Author: tanish1729

pytensor/tensor/rewriting/linalg.py

@@ -580,15 +580,13 @@ def rewrite_inv_inv(fgraph, node):
         return None
 
     potential_inner_inv = node.inputs[0].owner
-    if potential_inner_inv is None:
+    if potential_inner_inv is None or potential_inner_inv.op is None:
         return None
     # Check if its an inner solve as well, does that have b = eye
-    solve_inv_check = True
-    if potential_inner_inv.op and isinstance(potential_inner_inv.op, DimShuffle):
-        return None
-    if potential_inner_inv.op.core_op and isinstance(
-        potential_inner_inv.op.core_op, valid_solves
-    ):
+    solve_inv_check = True if hasattr(potential_inner_inv.op, "core_op") else False
+    # if potential_inner_inv.op and isinstance(potential_inner_inv.op, DimShuffle):
+    # return None
+    if solve_inv_check and isinstance(potential_inner_inv.op.core_op, valid_solves):
         solve_inv_check = _find_solve_with_eye(potential_inner_inv)
     if not solve_inv_check:
         return None