env variable validation fix

  return null;

};

const validateVariableName = (val) => {

  if (val) {

    if (val.length > 30) {

      return 'Maximum 30 characters';

    } else if (!val.match(/^(([_a-z0-9A-Z][_-a-z0-9.]*)?[_a-z0-9A-Z])+$/)) {

      return 'Alphanumeric or \'-\' or \'.\'';

    }

  }

  return null;

};

const validateOptionalName = (val) => {

  if (val ==='') return null;

  return validateName(val);

  const parts = entry.split('=');

  if (parts.length !== 2) return `${'VAR=value[,VAR=value]'}`;

  return [validateName(parts[0]), validateNotNull(parts[1])].filter(notNull);

  return [validateVariableName(parts[0]), validateNotNull(parts[1])].filter(notNull);

};

const validateChartGroupEntry = (entry) => {