image invalid, skipping

[Pollyana Minatel]

I am always getting an exception loop saying "image invalid, skipping" and I just can not see why.

2021-12-16 11:26:40.670417: W tensorflow/core/framework/op_kernel.cc:1639] Unknown: Exception:
Traceback (most recent call last):

File "C:\Anaconda3\envs\Sensor detection\lib\site-packages\tensorflow_core\python\ops\script_ops.py", line 235, in call
ret = func(*args)

File "D:\emn_pg (sensor detection project)\sensor detection\lib\layer_utils\proposal_target_layer.py", line 47, in proposal_target_layer
rois_per_image, _num_classes)

File "D:\emn_pg (sensor detection project)\sensor detection\lib\layer_utils\proposal_target_layer.py", line 135, in _sample_rois
raise Exception()

Exception

image invalid, skipping

These are an image and annotation examples:

<?xml version="1.0"?>
<annotation>
    <folder>annotations</folder>
    <filename>1.JPG</filename>
    <path/>
    <source>
        <database>Unknown</database>
    </source>
    <size>
        <width>3024</width>
        <height>4032</height>
        <depth>3</depth>
    </size>
    <segmented>0</segmented>
    <object>
        <name>sensor</name>
        <pose>Unspecified</pose>
        <truncated>0</truncated>
        <occluded>0</occluded>
        <difficult>0</difficult>
        <bndbox>
            <xmin>1189</xmin>
            <ymin>1433</ymin>
            <xmax>1709</xmax>
            <ymax>2013</ymax>
        </bndbox>
    </object>
</annotation>

Some images have more than one sensor:

<?xml version="1.0"?>
<annotation>
    <folder>annotations</folder>
    <filename>10.JPG</filename>
    <path/>
    <source>
        <database>Unknown</database>
    </source>
    <size>
        <width>3024</width>
        <height>4032</height>
        <depth>3</depth>
    </size>
    <segmented>0</segmented>
    <object>
        <name>sensor</name>
        <pose>Unspecified</pose>
        <truncated>0</truncated>
        <occluded>0</occluded>
        <difficult>0</difficult>
        <bndbox>
            <xmin>1643</xmin>
            <ymin>1528</ymin>
            <xmax>1748</xmax>
            <ymax>1620</ymax>
        </bndbox>
    </object>
    <object>
        <name>sensor</name>
        <pose>Unspecified</pose>
        <truncated>0</truncated>
        <occluded>0</occluded>
        <difficult>0</difficult>
        <bndbox>
            <xmin>2387</xmin>
            <ymin>2716</ymin>
            <xmax>2455</xmax>
            <ymax>2784</ymax>
        </bndbox>
    </object>
</annotation>

I can't see what image is causing this, or if it is a problem somewhere in the code. Can someone help me?