Fix A tree builder without a root node is deprecated since Symfony 4.…#228
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AizeLeOuf wants to merge 1 commit intoschmittjoh:masterfrom
AizeLeOuf:fix4.2_deprecated
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Fix A tree builder without a root node is deprecated since Symfony 4.…#228AizeLeOuf wants to merge 1 commit intoschmittjoh:masterfrom AizeLeOuf:fix4.2_deprecated
AizeLeOuf wants to merge 1 commit intoschmittjoh:masterfrom
AizeLeOuf:fix4.2_deprecated
