[mod.channel.php] implode(): Argument #1 ($array) must be of type array, string given #4783

Warning
Undefined array key "entry_ids"
ee/ExpressionEngine/Addons/channel/mod.channel.php, line 2567

Severity: E_WARNING
TypeError Caught
implode(): Argument #1 ($array) must be of type array, string given
ee/ExpressionEngine/Addons/channel/mod.channel.php:2567

Stack Trace: Please include when reporting this error
#0 ee/ExpressionEngine/Addons/channel/mod.channel.php(2567): implode(',', NULL)
#1 ee/ExpressionEngine/Addons/channel/mod.channel.php(2446): Channel->getExtraData(Array)
#2 ee/ExpressionEngine/Addons/channel/mod.channel.php(264): Channel->parse_channel_entries()
#3 ee/legacy/libraries/Template.php(1840): Channel->entries()
#4 ee/legacy/libraries/Template.php(1515): EE_Template->process_tags()
#5 ee/legacy/libraries/Template.php(630): EE_Template->tags()
#6 ee/legacy/libraries/Template.php(248): EE_Template->parse('{!-- ra:0000000...', false, 1, false)
#7 ee/legacy/libraries/Template.php(178): EE_Template->fetch_and_parse('', '', false)
#8 ee/legacy/libraries/Core.php(811): EE_Template->run_template_engine('', '')
#9 ee/legacy/controllers/ee.php(53): EE_Core->generate_page()
#10 [internal function]: EE->index('united-states', 'tourist-visa-im...', '[current-state]')
#11 ee/ExpressionEngine/Core/Core.php(269): call_user_func_array(Array, Array)
#12 ee/ExpressionEngine/Core/Core.php(125): ExpressionEngine\Core\Core->runController(Array)
#13 ee/ExpressionEngine/Boot/boot.php(184): ExpressionEngine\Core\Core->run(Object(ExpressionEngine\Core\Request))
#14 public_html/index.php(165): require_once('...')
#14 public_html/index.php(165): require_once('...')

{exp:channel:entries disable="comments|categories|pagination|member_data"  dynamic="no" entry_id ="{entry_ids}"
  channel="visas" fixed_order="{entry_ids}"}

....


{/exp:channel:entrie}