Fix bug: error when anonymouslysuggested topic get approved.
Fix bug: error when anonymouslysuggested topic get approved.

redsock88/expertiza,expertiza/expertiza,joshio1/expertiza,kira0992/expertiza,KunmiaoYang/expertiza,arpitashekhar/expertiza,arpitashekhar/expertiza,redsock88/expertiza,KunmiaoYang/expertiza,akshayjain114/expertiza,expertiza/expertiza,rmmaily/expertiza,kira0992/expertiza,KunmiaoYang/expertiza,redsock88/expertiza,ApertureScienceInnovators/expertiza,sid5788/expertiza,michaelamoran/expertiza,mhhassan/expertiza,kira0992/expertiza,KunmiaoYang/expertiza,ApertureScienceInnovators/expertiza,expertiza/expertiza,mhhassan/expertiza,joshio1/expertiza,redsock88/expertiza,urmilparikh95/expertiza,arpitashekhar/expertiza,rmmaily/expertiza,akshayjain114/expertiza,rmmaily/expertiza,arpitashekhar/expertiza,urmilparikh95/expertiza,rmmaily/expertiza,mhhassan/expertiza,ApertureScienceInnovators/expertiza,michaelamoran/expertiza,joshio1/expertiza,kira0992/expertiza,urmilparikh95/expertiza,urmilparikh95/expertiza,mhhassan/expertiza,sid5788/expertiza,akshayjain114/expertiza,michaelamoran/expertiza,sid5788/expertiza,akshayjain114/expertiza,ApertureScienceInnovators/expertiza,michaelamoran/expertiza,sid5788/expertiza,expertiza/expertiza,joshio1/expertiza