Invalid cast exception

Aspose.PDF Product Family
1

We suddenly see a lot of these exception

Unable to cast object of type ‘#=zYZrGvjWFX94EKE8bYxXnUefta2BsOci5Jg==’ to type ‘#=zd1H9fZk_YloY05lvVxMX9f8_oMibNf6wqA==’.
at #=z1zvw74KaVc_vOqdjPN1V_MjKeYfoZ6iE29HhIuYy26URkEqFpQ==.#=z9zeFmZU56_1e()
at Aspose.Pdf.Operators.SelectFont.#=zZkwnTkQ=(#=zzfxltZYVr9ScJAHf_I$rVjyB0w3eVa5zSDx5q65L0PSB #=zhTrmLl4=)
at Aspose.Pdf.Operator…ctor(Int32 #=zk7H7XIE=, #=zzfxltZYVr9ScJAHf_I$rVjyB0w3eVa5zSDx5q65L0PSB #=zhTrmLl4=)
at Aspose.Pdf.Operators.TextOperator…ctor(Int32 #=zk7H7XIE=, #=zzfxltZYVr9ScJAHf_I$rVjyB0w3eVa5zSDx5q65L0PSB #=zhTrmLl4=)
at Aspose.Pdf.Operators.TextStateOperator…ctor(Int32 #=zk7H7XIE=, #=zzfxltZYVr9ScJAHf_I$rVjyB0w3eVa5zSDx5q65L0PSB #=zhTrmLl4=)
at Aspose.Pdf.Operators.SelectFont…ctor(Int32 #=zk7H7XIE=, #=zzfxltZYVr9ScJAHf_I$rVjyB0w3eVa5zSDx5q65L0PSB #=zhTrmLl4=)
at #=z1zvw74KaVc_vOqdjPN1V_MjKeYfoZ6iE29HhIuYy26URkEqFpQ==.#=zucziQQs=(Int32 #=zk7H7XIE=)
at Aspose.Pdf.Operator.#=zy6Pcvh0=(Int32 #=zk7H7XIE=, #=zzfxltZYVr9ScJAHf_I$rVjyB0w3eVa5zSDx5q65L0PSB #=zhTrmLl4=)

and since the stacktrace is obfuscated it makes it hard to say which types are involved can you help out ?

2

@SteinGT
Please provide the code used and the document with which this happens.