Application Error

TypeError: Cannot read properties of undefined (reading 'toLowerCase')
    at /home/new_opkop/domains/new.opkop.nl/releases/130/build/index.js:11955:98
    at Array.map (<anonymous>)
    at BlockLoop (/home/new_opkop/domains/new.opkop.nl/releases/130/build/index.js:11951:38)
    at renderWithHooks (/home/new_opkop/domains/new.opkop.nl/releases/130/node_modules/react-dom/cjs/react-dom-server.node.development.js:5724:16)
    at renderIndeterminateComponent (/home/new_opkop/domains/new.opkop.nl/releases/130/node_modules/react-dom/cjs/react-dom-server.node.development.js:5797:15)
    at renderElement (/home/new_opkop/domains/new.opkop.nl/releases/130/node_modules/react-dom/cjs/react-dom-server.node.development.js:6012:7)
    at renderNodeDestructiveImpl (/home/new_opkop/domains/new.opkop.nl/releases/130/node_modules/react-dom/cjs/react-dom-server.node.development.js:6170:11)
    at renderNodeDestructive (/home/new_opkop/domains/new.opkop.nl/releases/130/node_modules/react-dom/cjs/react-dom-server.node.development.js:6142:14)
    at renderNode (/home/new_opkop/domains/new.opkop.nl/releases/130/node_modules/react-dom/cjs/react-dom-server.node.development.js:6325:12)
    at renderChildrenArray (/home/new_opkop/domains/new.opkop.nl/releases/130/node_modules/react-dom/cjs/react-dom-server.node.development.js:6277:7)