The gremlin is blamed for machines that break for no reason, so dreams of one are read as frustration with things going wrong just out of sight. It stands for small faults that sabotage a larger effort.
Does the traditional reading fit your dream, or did it mean something else to you?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.