Theme not loading

[sfmanso]

i keep getting this error everytime i try to load the application

TypeError: color.charAt is not a function
decomposeColor
node_modules/@material-ui/core/styles/colorManipulator.js:140
137 | return color;
138 | }
139 |

140 | if (color.charAt(0) === '#') {
| ^ 141 | return decomposeColor(hexToRgb(color));
142 | }
143 |

[3dv1n]

Recently I discovered that Material-UI has been updated to v4. I was suppuose that the error was due to the change of version, in the tuturial is using v3. Then I downgrade the dependencies, but is still a error with the original code without changes:

Error: Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: undefined. You likely forgot to export your component from the file it's defined in, or you might have mixed up default and named imports.

Check the render method of App.

i think we have to draw out time to read the new material ui. Greetings!

[rahulnayanegali]

This issue has been solved here.

mui/material-ui#16341 (comment)

https://stackoverflow.com/questions/56897838/getting-a-error-typeerror-color-charat-is-not-a-function-in-c-node-modul?answertab=votes#tab-top