I rain into one oddment. The epub I was editing had the following in the CSS:
Code:
img.full {
display: block;
width: 100%;
object-fit: contain;
height: 100vh;
margin-left: auto;
margin-right: auto;
}
which triggered:
Code:
ValueError: could not convert string to float: ' conta'
Error: could not convert string to float: ' conta'
Since the object-fit line was the only one in the CSS stylesheets that contained the string "conta", I removed it and and the error disappeared