fix user not found exception ref to #433e43c
fix user not found exception ref to #433e43c

Junnplus/firefly,ruitian/firefly,thcode/firefly,mozillazg/firefly,python-cn/firefly,killpanda/firefly,Junnplus/firefly,ruitian/firefly,matrixorz/firefly,matrixorz/firefly,matrixorz/firefly,killpanda/firefly,thcode/firefly,Junnplus/firefly,ruitian/firefly,mozillazg/firefly,Junnplus/firefly,halfcrazy/firefly,python-cn/firefly,dongweiming/firefly,halfcrazy/firefly,ruitian/firefly,killpanda/firefly,dongweiming/firefly,thcode/firefly,mozillazg/firefly,halfcrazy/firefly,python-cn/firefly,halfcrazy/firefly,thcode/firefly,killpanda/firefly,dongweiming/firefly,python-cn/firefly