Dreams dictionary: Stumble

Dreams dictionary: Interpretation 1
To dream that you stumble on something indicates that something is out of order with your life. As you are facing minor obstacles, you find that things are not going as smoothly as anticipated. Alternatively, the dream may be a metaphor that you are about to make a mistake in some waking decision.
Dreams dictionary: Miller Dream Interpretation
If you stumble in a dream while walking or running, you will meet with disfavor, and obstructions will bar your path to success, but you will eventually surmount them, if you do not fall.