Login fails with internal server error. Not a valid BCrypt hash. undefined

[fnberta]

Today I noticed a very strange behaviour. On a fresh clean install with an empty DB, I create a new user via the Android SDK (1.13.0). Everything is fine, I can login with no problems. But after performing a save operation on the user, logging out and waiting a couple of minutes, login fails with the following error:
GET /api/data/login 500 9.579 ms - 45
Uncaught internal server error. Not a valid BCrypt hash. undefined

It is a mystery to me what is causing this and I had a hard time to find the steps that trigger the error. It still seems kinda random but the above steps consistently trigger it!

I am running the latest version 2.1.6 behind a nginx reverse proxy on a Ubuntu 14.04 system with Node.js version v5.8.0. EDIT: I also tried running the app locally on my OSX system (direct access without nginx), resulting in the same error.

I know this is a rather vague bug report, but maybe you can point me in the right direction to find the cause for this?

[hramos]

We are closing this issue due to a lack of sufficient information. Feel free to reopen once you have more information that can help us reproduce the issue.

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[dnunes]

I am having exactly the same problem.

• I did a fresh install in a local MongoDB setup;
• I installed Parse Server in my Node.JS project;
• I installed parse-dashboard ("-g") in my machine;
• I ran the project (default node index.js);
• I ran the parse-dashboard as well (default parse-dashboard --config=yadda.xml);
• I used the Parse Dashboard interface to create a user;
• I tried to log in using "Parse.login" in my app.
• My Node.JS console shows:

error: Uncaught internal server error. Not a valid BCrypt hash. undefineded

Thinking about it, my Parse Dashboard is not showing the "password" field (I saw a bug report about it: parse-community/parse-dashboard#231) and I may have created a user without password, so that the BCrypt input may be "undefined" and invalid for the call. If that is the case (sorry I don't have time to investigate further in the Parse Server code to confirm it), I think a simple "undefined" check would suffice.

@fnberta, can you check if your user have a password in the database, if the error still persist in your case?

[dnunes]

Just checked my database and the password field is a simple string, not a hash.
{ "_id" : "SJX548GlLi", (...) "password" : "123" }

It's actually not a valid BCrypt hash. I think Parse Login code doesn't deal with it very well and doesn't call the fail callback (I'm not sure who spits the console error message, maybe the lower-level BCrypt checking lib?).

[jsyadav1996]

i had same error while login so i just changed data type of password column in users table from varchar to text and it worked.