Mobile development: the error of “task failed with exit 1 signal 0 {…”

compile time, always prompt ‘Task failed with exit 1 signal 0 {… ‘

this is the problem caused by failed key string verification, follow the following steps to handle

1. Close xcode

2, open the ‘key string access’ program

Drag your developer credentials from the login page to the systems page.

4. After dragging, the key string and key will be prompted, and the choice is always allowed. Generally, it is not necessary to enter the password, but click

several times
5. Recompile app, and the problem can be solved by

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