'Magento Admin Design settings. Error save configuration (Error L1)
I try to save theme configuration (i use the Athlete2 theme). But i get a strange error (image of the error message). I am beginer in magento, i tried to solve it(permission settings, reindex, clear cache, upgrade and etc), but i didn't find a solution. Also, i tried to find information about this error in the internet, but i found nothing. In magento logs i also didn't find any usefull information. Help me please)
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