Hello, I'm sorry for misunderstanding. Upon investigation, I got a similar error (though not exactly the same), which I can resolve by turning on the "C implementation" of Protobuf extension.
In particular, the PHP client library depends on the gRPC and protobuf, as written in README . If you follow the "Protobuf Runtime library" section of this page , you will probably install this C implementation of Protobuf already. Could you use "php -i | grep protobuf" to check if you have this installed? If not yet, could you try installing it and try again? Best, Thanet, Google Ads API Team ref:_00D1U1174p._5001UCZyrp:ref -- -- =~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~ Also find us on our blog: https://googleadsdeveloper.blogspot.com/ =~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~ You received this message because you are subscribed to the Google Groups "AdWords API and Google Ads API Forum" group. To post to this group, send email to adwords-api@googlegroups.com To unsubscribe from this group, send email to adwords-api+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/adwords-api?hl=en --- You received this message because you are subscribed to the Google Groups "AdWords API and Google Ads API Forum" group. To unsubscribe from this group and stop receiving emails from it, send an email to adwords-api+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/adwords-api/lUZoY000000000000000000000000000000000000000000000PU2AD2000T0LkFKOTGu_6JECFv3opg%40sfdc.net.