What were the problems faced by the Weimar Government from 1919 - 1923?

The Weimar Republic faced violent uprisings from various groups, not to mention devastating economic problems. Germany between 1918 and 1919 was in chaos. People were starving, the Kaiser had fled and people hated the government for signing the armistice in November 1918 - they called them the November criminals.

(what google says)