('Tensor Tensor("conv2d_21/BiasAdd:0", shape=(?, ?, ?, 4), dtype=float32) is not an element of this graph.',)

[little7Li]

Hi, when i use faces = mtcnn_detector.detect_faces(image) in a web server, i got this error. any idea?

[legraphista]

Hi @little7Li, have you loaded MTCNN on another thread than the one you're trying to use it?

I recently had this problem, looks like tensorflow doesn't like using graphs across threads, see https://github.com/tensorflow/tensorflow/issues/14356#issuecomment-385962623