Set `PRESERVE_CONTEXT_ON_EXCEPTION` in config
Set `PRESERVE_CONTEXT_ON_EXCEPTION` in config

For some reason, this is necessary in flask-testing

agdsn/sipa,lukasjuhrich/sipa,agdsn/sipa,MarauderXtreme/sipa,MarauderXtreme/sipa,lukasjuhrich/sipa,lukasjuhrich/sipa,lukasjuhrich/sipa,agdsn/sipa,agdsn/sipa,MarauderXtreme/sipa