PHP connection to redis using phpredis error

If phpredis is used in the project to connect to redis, the following error is occasionally reported: {code ...} check that the project configuration information is correct. the error message is that someone has encountered a similar problem in issues of github when using redis to process sessions in the project occasionally, but there is no reason for this... such as the question, used in the project phpredisLink redisOccasionally, the following error is reported:

PHP Fatal error:  Uncaught exception 'RedisException' with message 'Failed to AUTH connection' in [no active file]:0Stack trace:#0 {main}  thrown in [no active file] on line 0"

1. checkThe project configuration information is correct. this error message appears occasionally.

2. Use in projectredisProcessingsession

3. IngithubOfissuesSome people have encountered similar problems, but they have not given the reasons and how to solve them.

If you have encountered similar problems in the project, you should directly use them.predisWhat about this extension?

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Such as the question, used in the projectphpredisLinkredisOccasionally, the following error is reported:

PHP Fatal error:  Uncaught exception 'RedisException' with message 'Failed to AUTH connection' in [no active file]:0Stack trace:#0 {main}  thrown in [no active file] on line 0"

1. checkThe project configuration information is correct. this error message appears occasionally.

2. Use in projectredisProcessingsession

3. IngithubOfissuesSome people have encountered similar problems, but they have not given the reasons and how to solve them.

If you have encountered similar problems in the project, you should directly use them.predisWhat about this extension?

The extension phpredis is getting worse and worse ....

Check whether the Redis password is correct. if the cluster is deployed, check whether the environment is inconsistent.

$ Client = new Predis \ Client (array ('scheme '=> 'tcp', 'host' => '2017. 0.0.1 ', 'port' => 6379, 'database' => 15, 'password' => 'password '));

Does the prompted authentication fail?