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Hi!

Please help me: the Springer latex template is not working when I compile the file.

Latex error is:
\mathbf allowed only in math mode

\documentclass[sn-mathphys]{sn-jnl}% Math and Physical Sciences Reference Style

\usepackage{amssymb}
\usepackage{eufrak}
\usepackage{amsmath}
\usepackage ...