$||.||$ in math mode becomes a table

[awaisrauf]

I am using use_math: true. Most of the equations are visible as expected, however, equations involving norms (||.||) are being converted to tables. I am using the $.$ sign for equations to make sure that the latex is being converted.

A sample is shown below:
Text: If no solution exists then it gives $x$ such that $Ax$ is as close to $b$ as possible in terms of $||b-Ax||_2$
Output in Blog:

[awaisrauf]

Solved by using $|$. I guess $||.||$ is not the standrad way to show norms in latex.