当我尝试运行时mongod --dbpath=./data，出现以下错误：
2017-09-20T21:47:55.720+0200 I CONTROL [initandlisten] MongoDB starting : pid=20500 port=27017 dbpath=./data 64-bit host=debian
2017-09-20T21:47:55.721+0200 I CONTROL [initandlisten] db version v3.2.11
2017-09-20T21:47:55.721+0200 I CONTROL [initandlisten] git version: 009580ad490190ba33d1c6253ebd8d91808923e4
2017-09-20T21:47:55.721+0200 I CONTROL [initandlisten] OpenSSL version: OpenSSL 1.0.2l 25 May 2017
2017-09-20T21:47:55.721+0200 I CONTROL [initandlisten] allocator: tcmalloc
2017-09-20T21:47:55.721+0200 I CONTROL [initandlisten] modules: none
2017-09-20T21:47:55.721+0200 I CONTROL [initandlisten] build environment:
2017-09-20T21:47:55.721+0200 I CONTROL [initandlisten] distarch: x86_64
2017-09-20T21:47:55.721+0200 I CONTROL [initandlisten] target_arch: x86_64
2017-09-20T21:47:55.722+0200 I CONTROL [initandlisten] options: { storage: { dbPath: …mongodb ×1