I have some problems using the package cmbright. It renders pixelated maths symbols. I don't understand since the package is installed in miktex. I compile using pdflatex

![enter image description here](https://i.stack.imgur.com/xzWhb.png)

```
\documentclass[english]{article}
\usepackage[T1]{fontenc}
\usepackage[latin9]{inputenc}

\makeatletter
\usepackage{cmbright}

\makeatother

\usepackage{babel}
\begin{document}
Hey!$\lambda\beta\gamma$
\end{document}

```

Here is the output of upmap --verbose

![enter image description here](https://i.stack.imgur.com/BLOTT.png)