Check out example codes for "DevTools failed to load SourceMap: Could not load content for bootstrap.min.css.map". It will help you in understanding the concepts better.
Code Example 1
Delete /*# sourceMappingURL=bootstrap.min.css.map */ in css/bootstrap.min.css and delete /*# sourceMappingURL=bootstrap.css.map */ in css/bootstrap.css It is working for me. I hope it will work for you also. Namaste _/\_
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