[Solved] Error: this may cause an update error. (“prov”, value)

Duplicate keys detected: ‘Jiaozuo City’. This may cause an update error.
if you see this error message, it indicates that the key value of the V-for instruction is repeated,

Just modify your key value so that it will not be repeated.

After modification, it is like this

When the address is selected as other, such an error will be reported. After looking at the area.js region, the structure of other regions is different from that of other regions, and it will be changed to the same structure. (seems to be)

‘value’ is expected to be string number, But the result is array

Console.log the current error code location   Find out which are arrays, and then look in the code to see where the problem is

If you comment on this line of code, you will not report an error!

After change

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