FatalErrorException in Inflector.php line 265: syntax error, unexpected ':', expecting ';' or '{'

Question

I went to update composer using

composer update

after update having the following error:

FatalErrorException in Inf

Answer 1

Delete composer.lock file

`rm -f Composer.lock`

Delete the vendor folder

rm -R -f vendor

composer install

Then you can install a specific version of doctrine/inflector using composer for example:

composer require doctrine/inflector:1.2.0 (this will work with php 7.0)

Also, it helps me to resolve the build issue to upgrade carbon if you are using

composer require nesbot/carbon=1.29.*