throw better errors for service existence assert (#4599)
throw better errors for service existence assert (#4599)


engtat/amphtml,sklobovskaya/amphtml,cvializ/amphtml,danielrozenberg/amphtml,yieldbot/amphtml,burtcorp/amphtml,interspacejp/amphtml,wjfang/amphtml,sharethrough/amphtml,cory-work/amphtml,jlucero-contentad/amphtml,DarXector/amphtml,nexxtv/amphtml,tlong2/amphtml,nexxtv/amphtml,taboola/amphtml,rsimha-amp/amphtml,BrightcoveOS/amphtml,spotxchange/amphtml,mhc-gh/amphtml,yevheniiminin/amphtml,Lith/amphtml,mhc-gh/amphtml,adup-tech/amphtml,ecoron/amphtml,jridgewell/amphtml,danielrozenberg/amphtml,comScore/amphtml,cvializ/amphtml,jpettitt/amphtml,yevheniiminin/amphtml,dvoytenko/amphtml,voyagegroup/amphtml,yieldbot/amphtml,nexxtv/amphtml,avimehta/amphtml,cory-work/amphtml,arealit/amphtml,techhtml/amphtml,jasti/amphtml,powdercloud/amphtml,camelburrito/amphtml,prateekbh/amphtml,jridgewell/amphtml,devjsun/amphtml,BenDz/amphtml,taboola/amphtml,britice/amphtml,sklobovskaya/amphtml,gumgum/amphtml,devjsun/amphtml,pedjoni8/amphtml,kixer-com/amphtml,sortable/amphtml,ecoron/amphtml,interspacejp/amphtml,alanorozco/amphtml,sriramkrish85/amphtml,arealit/amphtml,jlucero-contentad/amphtml,DAC-f1h-dev/amphtml,mhc-gh/amphtml,zhucl/amphtml,pedjoni8/amphtml,engtat/amphtml,kmh287/amphtml,Mixpo/amphtml,adiant/amphtml,smartadserver/amphtml,jmadler/amphtml,criteo-forks/amphtml,jmadler/amphtml,jpettitt/amphtml,powdercloud/amphtml,clawr/amphtml,yandex-pcode/amphtml,adtechnology/amphtml,kixer-com/amphtml,aghassemi/amphtml,rlugojr/amphtml,avimehta/amphtml,ADITION/amphtml,interspacejp/amphtml,zhouyx/amphtml,cory-work/amphtml,comScore/amphtml,rlugojr/amphtml,donttrustthisbot/amphtml,pedjoni8/amphtml,sortable/amphtml,adtechnology/amphtml,ADITION/amphtml,arealit/amphtml,tdrl/amphtml,danielrozenberg/amphtml,danielrozenberg/amphtml,vmarteev/amphtml,Adtoma/amphtml,ampproject/amphtml,aghassemi/amphtml,donttrustthisbot/amphtml,luciancrasovan/amphtml,alanorozco/amphtml,tlong2/amphtml,Mixpo/amphtml,DistroScale/amphtml,adup-tech/amphtml,tdrl/amphtml,jlucero-contentad/amphtml,rajkumarsrk/amphtml,avimehta/amphtml,adup-tech/amphtml,luciancrasovan/amphtml,mhc-gh/amphtml,yevheniiminin/amphtml,triplelift/amphtml,DAC-f1h-dev/amphtml,pedjoni8/amphtml,Mobusi-ads/amphtml,burtcorp/amphtml,cory-work/amphtml,comScore/amphtml,yieldbot/amphtml,ericlindley-g/amphtml,mlb7687/amphtml,koshka/amphtml,jasti/amphtml,Lith/amphtml,jmadler/amphtml,rajkumarsrk/amphtml,jmadler/amphtml,pietergreyling/amphtml,media-net/amphtml,DarXector/amphtml,engtat/amphtml,honeybadgerdontcare/amphtml,jdelhommeau/amphtml,gumgum/amphtml,koshka/amphtml,rajkumarsrk/amphtml,kixer-com/amphtml,aghassemi/amphtml,cory-work/amphtml,laterpay/amphtml,criteo-forks/amphtml,kixer-com/amphtml,vmarteev/amphtml,smartadserver/amphtml,rajkumarsrk/amphtml,rsimha-amp/amphtml,alanorozco/amphtml,rifler/amphtml,pietergreyling/amphtml,smartadserver/amphtml,erwinmombay/amphtml,kamtschatka/amphtml,engtat/amphtml,aghassemi/amphtml,jdelhommeau/amphtml,prateekbh/amphtml,mhc-gh/amphtml,vmarteev/amphtml,DAC-f1h-dev/amphtml,camelburrito/amphtml,cvializ/amphtml,engtat/amphtml,jmadler/amphtml,zhucl/amphtml,vmarteev/amphtml,Mixpo/amphtml,yieldbot/amphtml,JuliusThms/amphtml,devjsun/amphtml,Lith/amphtml,zhucl/amphtml,Gregable/amphtml,yieldmo/amphtml,JuliusThms/amphtml,prateekbh/amphtml,bpaduch/amphtml,lzanol/amphtml,sharethrough/amphtml,adtechnology/amphtml,clawr/amphtml,mlb7687/amphtml,src-code/amphtml,lannka/amphtml,bpaduch/amphtml,ampproject/amphtml,smartadserver/amphtml,kixer-com/amphtml,widespace-os/amphtml,camelburrito/amphtml,ecoron/amphtml,spotxchange/amphtml,spotxchange/amphtml,wjfang/amphtml,ampproject/amphtml,nexxtv/amphtml,sebastianbenz/amphtml,keithwrightbos/amphtml,rsimha-amp/amphtml,rsimha-amp/amphtml,media-net/amphtml,danielrozenberg/amphtml,clawr/amphtml,laterpay/amphtml,lzanol/amphtml,BrightcoveOS/amphtml,prateekbh/amphtml,vmarteev/amphtml,widespace-os/amphtml,dotandads/amphtml,taboola/amphtml,pedjoni8/amphtml,interspacejp/amphtml,chaveznvg/amphtml,ruturajv-media-net/amphtml,powdercloud/amphtml,prateekbh/amphtml,arealit/amphtml,sklobovskaya/amphtml,nexxtv/amphtml,JuliusThms/amphtml,zhucl/amphtml,techhtml/amphtml,rlugojr/amphtml,britice/amphtml,tlong2/amphtml,shawnbuso/amphtml,tdrl/amphtml,pedjoni8/amphtml,engtat/amphtml,rlugojr/amphtml,yieldmo/amphtml,sortable/amphtml,jlucero-contentad/amphtml,honeybadgerdontcare/amphtml,voyagegroup/amphtml,Adtoma/amphtml,techhtml/amphtml,camelburrito/amphtml,sharethrough/amphtml,mlb7687/amphtml,devjsun/amphtml,Gregable/amphtml,zhouyx/amphtml,clawr/amphtml,adiant/amphtml,ADITION/amphtml,keithwrightbos/amphtml,taboola/amphtml,kixer-com/amphtml,honeybadgerdontcare/amphtml,sortable/amphtml,alanorozco/amphtml,gumgum/amphtml,yandex-pcode/amphtml,ampproject/amphtml,tdrl/amphtml,voyagegroup/amphtml,jdelhommeau/amphtml,fullspeed-sp/amphtml,pietergreyling/amphtml,lzanol/amphtml,powdercloud/amphtml,sriramkrish85/amphtml,chaveznvg/amphtml,ruturajv-media-net/amphtml,Adtoma/amphtml,sklobovskaya/amphtml,alanorozco/amphtml,yieldbot/amphtml,BenDz/amphtml,adup-tech/amphtml,koshka/amphtml,jridgewell/amphtml,sortable/amphtml,yevheniiminin/amphtml,Mobusi-ads/amphtml,kmh287/amphtml,rifler/amphtml,kmh287/amphtml,rsimha-amp/amphtml,Mobusi-ads/amphtml,DistroScale/amphtml,bpaduch/amphtml,JuliusThms/amphtml,gumgum/amphtml,dvoytenko/amphtml,avimehta/amphtml,bpaduch/amphtml,rifler/amphtml,rlugojr/amphtml,danielrozenberg/amphtml,fullspeed-sp/amphtml,zhangsu/amphtml,rsimha-amp/amphtml,adtechnology/amphtml,interspacejp/amphtml,honeybadgerdontcare/amphtml,shawnbuso/amphtml,Gregable/amphtml,taboola/amphtml,alanorozco/amphtml,rifler/amphtml,dvoytenko/amphtml,tdrl/amphtml,ruturajv-media-net/amphtml,sharethrough/amphtml,BenDz/amphtml,kixer-com/amphtml,luciancrasovan/amphtml,laterpay/amphtml,sebastianbenz/amphtml,vmarteev/amphtml,spotxchange/amphtml,koshka/amphtml,zhangsu/amphtml,jmadler/amphtml,wjfang/amphtml,Adtoma/amphtml,donttrustthisbot/amphtml,fullspeed-sp/amphtml,criteo-forks/amphtml,comScore/amphtml,jdelhommeau/amphtml,yieldmo/amphtml,cvializ/amphtml,sklobovskaya/amphtml,lzanol/amphtml,honeybadgerdontcare/amphtml,Mobusi-ads/amphtml,fullspeed-sp/amphtml,zhucl/amphtml,sklobovskaya/amphtml,criteo-forks/amphtml,prateekbh/amphtml,triplelift/amphtml,BrightcoveOS/amphtml,sriramkrish85/amphtml,kmh287/amphtml,yieldmo/amphtml,shawnbuso/amphtml,comScore/amphtml,DAC-f1h-dev/amphtml,burtcorp/amphtml,jdelhommeau/amphtml,rlugojr/amphtml,kmh287/amphtml,erwinmombay/amphtml,alanorozco/amphtml,lannka/amphtml,chaveznvg/amphtml,donttrustthisbot/amphtml,sharethrough/amphtml,sebastianbenz/amphtml,keithwrightbos/amphtml,adtechnology/amphtml,jpettitt/amphtml,widespace-os/amphtml,tlong2/amphtml,src-code/amphtml,devjsun/amphtml,yevheniiminin/amphtml,danielrozenberg/amphtml,camelburrito/amphtml,keithwrightbos/amphtml,cory-work/amphtml,yandex-pcode/amphtml,zhangsu/amphtml,zhouyx/amphtml,yandex-pcode/amphtml,shawnbuso/amphtml,avimehta/amphtml,luciancrasovan/amphtml,fullspeed-sp/amphtml,jpettitt/amphtml,lannka/amphtml,src-code/amphtml,ampproject/amphtml,yandex-pcode/amphtml,BenDz/amphtml,criteo-forks/amphtml,keithwrightbos/amphtml,media-net/amphtml,widespace-os/amphtml,zhouyx/amphtml,sriramkrish85/amphtml,adup-tech/amphtml,DarXector/amphtml,rajkumarsrk/amphtml,alanorozco/amphtml,wjfang/amphtml,ampproject/amphtml,zhangsu/amphtml,ericlindley-g/amphtml,yandex-pcode/amphtml,jridgewell/amphtml,bpaduch/amphtml,techhtml/amphtml,Mixpo/amphtml,zhucl/amphtml,Adtoma/amphtml,wjfang/amphtml,keithwrightbos/amphtml,prateekbh/amphtml,lannka/amphtml,burtcorp/amphtml,dotandads/amphtml,devjsun/amphtml,media-net/amphtml,wjfang/amphtml,adiant/amphtml,triplelift/amphtml,BrightcoveOS/amphtml,shawnbuso/amphtml,lzanol/amphtml,jpettitt/amphtml,yieldmo/amphtml,jasti/amphtml,Mixpo/amphtml,yieldmo/amphtml,spotxchange/amphtml,Gregable/amphtml,taboola/amphtml,donttrustthisbot/amphtml,Mobusi-ads/amphtml,triplelift/amphtml,tlong2/amphtml,gumgum/amphtml,ruturajv-media-net/amphtml,cvializ/amphtml,spotxchange/amphtml,sharethrough/amphtml,criteo-forks/amphtml,pietergreyling/amphtml,smartadserver/amphtml,src-code/amphtml,ericlindley-g/amphtml,Gregable/amphtml,dvoytenko/amphtml,jridgewell/amphtml,yandex-pcode/amphtml,ampproject/amphtml,camelburrito/amphtml,pietergreyling/amphtml,comScore/amphtml,shawnbuso/amphtml,engtat/amphtml,donttrustthisbot/amphtml,jridgewell/amphtml,widespace-os/amphtml,ruturajv-media-net/amphtml,dvoytenko/amphtml,Gregable/amphtml,jasti/amphtml,lannka/amphtml,widespace-os/amphtml,arealit/amphtml,DistroScale/amphtml,chaveznvg/amphtml,kamtschatka/amphtml,Lith/amphtml,DistroScale/amphtml,jasti/amphtml,camelburrito/amphtml,arealit/amphtml,dotandads/amphtml,yieldmo/amphtml,adup-tech/amphtml,laterpay/amphtml,kamtschatka/amphtml,fullspeed-sp/amphtml,BenDz/amphtml,rsimha-amp/amphtml,media-net/amphtml,jpettitt/amphtml,DistroScale/amphtml,erwinmombay/amphtml,koshka/amphtml,comScore/amphtml,Lith/amphtml,ADITION/amphtml,aghassemi/amphtml,ampproject/amphtml,ecoron/amphtml,clawr/amphtml,zhouyx/amphtml,nexxtv/amphtml,Mobusi-ads/amphtml,voyagegroup/amphtml,Mixpo/amphtml,ADITION/amphtml,smartadserver/amphtml,avimehta/amphtml,zhangsu/amphtml,jpettitt/amphtml,zhouyx/amphtml,media-net/amphtml,adiant/amphtml,DistroScale/amphtml,DarXector/amphtml,mlb7687/amphtml,gumgum/amphtml,ecoron/amphtml,mhc-gh/amphtml,JuliusThms/amphtml,powdercloud/amphtml,laterpay/amphtml,DarXector/amphtml,chaveznvg/amphtml,sriramkrish85/amphtml,ecoron/amphtml,kmh287/amphtml,dvoytenko/amphtml,JuliusThms/amphtml,adiant/amphtml,donttrustthisbot/amphtml,src-code/amphtml,zhucl/amphtml,shawnbuso/amphtml,sebastianbenz/amphtml,luciancrasovan/amphtml,jridgewell/amphtml,cvializ/amphtml,BrightcoveOS/amphtml,lannka/amphtml,kamtschatka/amphtml,rajkumarsrk/amphtml,ericlindley-g/amphtml,britice/amphtml,honeybadgerdontcare/amphtml,media-net/amphtml,vmarteev/amphtml,voyagegroup/amphtml,lannka/amphtml,arealit/amphtml,aghassemi/amphtml,voyagegroup/amphtml,mhc-gh/amphtml,sebastianbenz/amphtml,cory-work/amphtml,adtechnology/amphtml,ericlindley-g/amphtml,jdelhommeau/amphtml,gumgum/amphtml,interspacejp/amphtml,techhtml/amphtml,bpaduch/amphtml,mhc-gh/amphtml,mlb7687/amphtml,jpettitt/amphtml,BrightcoveOS/amphtml,powdercloud/amphtml,nexxtv/amphtml,bpaduch/amphtml,Gregable/amphtml,adiant/amphtml,dotandads/amphtml,ericlindley-g/amphtml,jlucero-contentad/amphtml,BenDz/amphtml,clawr/amphtml,pietergreyling/amphtml,DarXector/amphtml,koshka/amphtml,media-net/amphtml,techhtml/amphtml,laterpay/amphtml,sriramkrish85/amphtml,sklobovskaya/amphtml,clawr/amphtml,yieldbot/amphtml,taboola/amphtml,powdercloud/amphtml,src-code/amphtml,erwinmombay/amphtml,burtcorp/amphtml,sortable/amphtml,danielrozenberg/amphtml,DAC-f1h-dev/amphtml,Gregable/amphtml,burtcorp/amphtml,jlucero-contentad/amphtml,triplelift/amphtml,kamtschatka/amphtml,erwinmombay/amphtml,britice/amphtml,kamtschatka/amphtml,sebastianbenz/amphtml,luciancrasovan/amphtml,rajkumarsrk/amphtml,yevheniiminin/amphtml,keithwrightbos/amphtml,Adtoma/amphtml,jasti/amphtml,DAC-f1h-dev/amphtml,chaveznvg/amphtml,rifler/amphtml,adiant/amphtml,dotandads/amphtml,triplelift/amphtml,zhangsu/amphtml,Lith/amphtml,ruturajv-media-net/amphtml,zhouyx/amphtml,voyagegroup/amphtml,mlb7687/amphtml,luciancrasovan/amphtml,lzanol/amphtml,honeybadgerdontcare/amphtml,tlong2/amphtml,wjfang/amphtml,dotandads/amphtml,erwinmombay/amphtml,rifler/amphtml,tdrl/amphtml