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Syndicate_Admin
Administrator
Administrator

Custom connector error: n is not a function

Hi everyone,

I have the follwoing problem with my canvas app, which uses custom connectors to self made azure functions or external API's. When users try to open the app first time, they are asked to sign/give permissions for the custom connector.

FlavioFelder_1-1692778464768.png

For some users this works without a problem, but some users are unable to login and get the following error:

FlavioFelder_0-1692778449187.png

After two days of troubleshooting I still couldn't figure out what the problem is.

The custom connectors have no authentication and work for some users. I had this issue with my own user, who even has edit permissions on the connectors. I also had the issue with only 2 of the custom connectors.

First i thought it's an issue with permissions, so i gave my account the system administrator role in the powerapps admin center. Then it worked, so i took away the role again and it still worked. But that's not a workaround for the whole company (every employee should be able to use the app). Is there a specific role i need to assign my users or create a custom one?

I'm really confused because I never had this issue before in the development and testing phase of the app, and after I redeployed a new version (with new connectors and already used ones), users get this error. Also i found nothing helpfull about the error message "n is not a function".

 

Has anybody an idea where the problem could be?

 

1 ACCEPTED SOLUTION

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Syndicate_Admin
Administrator
Administrator

After two days I finally found the solution. I had some test users with which I tried it out. I Checked the respond from the server directly with the developer tools in the browser. The actual error was "user[..]is missing prvReadconnector privilege", which helped a lot.

FlavioFelder_0-1693388432900.png

 

In my company we have quiet strict policies reagarding user permissions, so not every user had the right to actually read connectors. So I had to find a security role that is assigned to every user who uses the app or create a new security role. The security role needs read right on the property connector, see the following picture.

FlavioFelder_1-1693388469561.png

I found the permission in the security settings, under custom entites. I'm not sure if that's the case in a standard setup or just for my company. I hope this can help.

 

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4 REPLIES 4
Syndicate_Admin
Administrator
Administrator

I have the exact same problem. In a browser, it says "n is not a function". On the mobile app, it says "Object is not a function".

 

This is only happening to ONE user who tried to log in for the first time this week. All other users (about 20-30) were able to connect to the custom connector without a problem.

 

Does anyone have an explanation/fix/workaround ?

Syndicate_Admin
Administrator
Administrator

After two days I finally found the solution. I had some test users with which I tried it out. I Checked the respond from the server directly with the developer tools in the browser. The actual error was "user[..]is missing prvReadconnector privilege", which helped a lot.

FlavioFelder_0-1693388432900.png

 

In my company we have quiet strict policies reagarding user permissions, so not every user had the right to actually read connectors. So I had to find a security role that is assigned to every user who uses the app or create a new security role. The security role needs read right on the property connector, see the following picture.

FlavioFelder_1-1693388469561.png

I found the permission in the security settings, under custom entites. I'm not sure if that's the case in a standard setup or just for my company. I hope this can help.

 

Syndicate_Admin
Administrator
Administrator

Ok, so I actually found the solution to my problem. The person who added the user did not configure it properly. It was not assigned to the correct Business Unit, and did not have the correct User Role.

 

This may also be where your problem comes from. When using custom connectors, always make sure the user role has permissions to use custom connectors.

Syndicate_Admin
Administrator
Administrator

Haha, we posted almost at the same time. ^^' Glad you found the solution too.

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