How to solve the error code -1 received by the applet

How to solve the error code -1 received by the applet

If you are requesting data in the cloud database, it is a permission issue

Recommended learning: Small program development

The solution is as follows:

Check "Readable by all users, only the creator Read and write”

#What if you need to make all users readable and writable?

The answer is to create a cloud function and call the cloud function to write to the database, because the cloud function has the creator's permissions!

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