An early morning email Thursday signaled the end of a young Roseburg restaurant that had gained an enthusiastic fan base for its devotion to providing a venue for area musicians. Owners cited financial problems in announcing the immediate closing of Joe Monkey and its adjoining lounge, Chimps Hangout, on Southeast Cass Avenue. Co-owner Shelly Crespi sent out a mass email at 4:51 a.m. Thursday saying she was in debt and had to turn over the keys. She thanked supporters while voicing regret over the hard decision she and her husband, Chris Crespi, had to make. “We love our customers and …