AttributeError: 'NoneType' object has no attribute 'encode'

[G-Cao]

There is a problem with the automatic saving of this software, which results in that occasionally a label does not save the label name after marking the label, but only saves the label coordinates. Opening the image again will crash because there is no tag name.

xml:

<object>
		<name>No_SafeHat</name>
		<pose>Unspecified</pose>
		<truncated>0</truncated>
		<difficult>0</difficult>
		<bndbox>
			<xmin>397</xmin>
			<ymin>67</ymin>
			<xmax>444</xmax>
			<ymax>121</ymax>
		</bndbox>
	</object>
	<object>
		<name/>
		<pose>Unspecified</pose>
		<truncated>0</truncated>
		<difficult>0</difficult>
		<bndbox>
			<xmin>163</xmin>
			<ymin>80</ymin>
			<xmax>206</xmax>
			<ymax>134</ymax>
		</bndbox>
	</object>

Traceback:

Traceback (most recent call last):
  File "labelImg.py", line 1397, in open_prev_image
    self.load_file(filename)
  File "labelImg.py", line 1159, in load_file
    self.show_bounding_box_from_annotation_file(file_path)
  File "labelImg.py", line 1190, in show_bounding_box_from_annotation_file
    self.load_pascal_xml_by_filename(xml_path)
  File "labelImg.py", line 1606, in load_pascal_xml_by_filename
    self.load_labels(shapes)
  File "labelImg.py", line 857, in load_labels
    shape.line_color = generate_color_by_text(label)
  File "/Users/～/labelImg-master/libs/utils.py", line 84, in generate_color_by_text
    hash_code = int(hashlib.sha256(s.encode('utf-8')).hexdigest(), 16)
AttributeError: 'NoneType' object has no attribute 'encode'
zsh: abort      python labelImg.py

• Mac OS
• PyQt 5.15