IS it possible to be some mistakes of general web page [www.appsheet.com]?
Warning: The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment. At line 46, column 11


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4.Error: Bad start tag in img in head. At line 152, column 94 in resource https://www.appsheet.com/Template/Apps
5.Error: An img element must have an alt attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images. At line 152, column 94 in resource https://www.appsheet.com/Template/Apps
6.Error: Stray end tag noscript. From line 153, column 5; to line 153, column 15 1" />↩
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7.Warning: The type attribute is unnecessary for JavaScript resources. From line 155, column 5; to line 155, column 35 e -->↩
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8.Warning: The type attribute is unnecessary for JavaScript resources. From line 252, column 1; to line 252, column 31 clude -->↩↩
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9.Warning: The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment. At line 546, column 7 ript>↩↩↩↩↩↩↩↩↩<bo
11.Error: Start tag body seen but an element of the same type was already open. From line 557, column 1; to line 557, column 19 ↩↩↩↩
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12.Fatal Error: Cannot recover after last error. Any further errors will be ignored. From line 557, column 1; to line 557, column 19 ↩↩↩↩
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