解决Redis报错Redis is configured to save RDB snapshots, but it is currently not able to persist on disk

org.springframework.data.redis.RedisSystemException: Error in execution; nested exception is io.lettuce.core.RedisCommandExecutionException: MISCONF Redis is configured to save RDB snapshots, but it is currently not able to persist on disk. Commands that may modify the data set are disabled, because this instance is configured to report errors during writes if RDB snapshotting fails (stop-writes-on-bgsave-error option). Please check the Redis logs for details about the RDB error.

	at org.springframework.data.redis.connection.lettuce.LettuceExceptionConverter.convert(LettuceExceptionConverter.java:54)
	at org.springframework.data.redis.connection.lettuce.LettuceExceptionConverter.convert(LettuceExceptionConverter.java:52)
	at org.springframework.data.redis.connection.lettuce.LettuceExceptionConverter.convert(LettuceExceptionConverter.java:41)
	at org.springframework.data.redis.PassThroughExceptionTranslationStrategy.translate(PassThroughExceptionTranslationStrategy.java:44)
	at org.springframework.data.redis.FallbackExceptionTranslationStrategy.translate(FallbackExceptionTranslationStrategy.java:42)
	at org.springframework.data.redis.connection.lettuce.LettuceConnection.convertLettuceAccessException(LettuceConnection.java:270)
	at org.springframework.data.redis.connection.lettuce.LettuceStringCommands.convertLettuceAccessException(LettuceStringCommands.java:799)
	at org.springframework.data.redis.connection.lettuce.LettuceStringCommands.set(LettuceStringCommands.java:148)
	at org.springframework.data.redis.connection.DefaultedRedisConnection.set(DefaultedRedisConnection.java:281)
	at org.springframework.data.redis.core.DefaultValueOperations$3.inRedis(DefaultValueOperations.java:240)
	at org.springframework.data.redis.core.AbstractOperations$ValueDeserializingRedisCallback.doInRedis(AbstractOperations.java:60)
	at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:228)
	at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:188)
	at org.springframework.data.redis.core.AbstractOperations.execute(AbstractOperations.java:96)
	at org.springframework.data.redis.core.DefaultValueOperations.set(DefaultValueOperations.java:236)

11875:M 06 Mar 2020 09:00:12.034 * 1 changes in 3600 seconds. Saving...
11875:M 06 Mar 2020 09:00:12.035 * Background saving started by pid 12625
12625:C 06 Mar 2020 09:00:12.036 # Failed opening the RDB file dump.rdb (in server root dir /usr/local/redis-5.0.7) for saving: Permission denied

# The filename where to dump the DB
dbfilename dump.rdb

# The working directory.
#
# The DB will be written inside this directory, with the filename specified
# above using the 'dbfilename' configuration directive.
#
# The Append Only File will also be created inside this directory.
#
# Note that you must specify a directory here, not a file name.
dir ./

dir /Users/zzs/tools/dbs

config set stop-writes-on-bgsave-error no