The German government did not have enough money to pay for the passive resistance in the Ruhr, so it simply printed more. This caused inflation as the German government printed money that it did not have. This caused the value of money to go down and prices to go up which is a major reason the German economy went downhill even more (this had been happening since the time of the Kaiser, but in 1923 it got much worse).
This is called 'hyperinflation' which is disastrous for any country involved. People who had worked hard all their lives were turned into beggars as all their pensions and savings had lost value. Even people who were lucky enough to have jobs could not keep up with the extreme rise in prices. People did not blame the Kaiser's war government which had started the inflation by its borrowing, but instead blamed the Weimar government, which had agreed to pay reperations under the Versailles Treaty.