Laravel Barryvdh / laravel-dompdf安装错误

Question

嗨，我正在尝试生成PDF文件，当我输入此命令时我找到了本指南

 composer require barryvdh/laravel-dompdf

我得到这个错误

Problem 1
- Installation request for barryvdh/laravel-dompdf ^0.8.3 -> satisfiable by barryvdh/laravel-dompdf[v0.8.3].
- Conclusion: remove laravel/framework v5.4.36
- Conclusion: don't install laravel/framework v5.4.36
- barryvdh/laravel-dompdf v0.8.3 requires illuminate/support 
5.5.x|5.6.x|5.7.x -> satisfiable by illuminate/support[5.7.17, 5.7.18, 
5.7.19, v5.5.0, v5.5.16, v5.5.17, v5.5.2, v5.5.28, v5.5.33, v5.5.34, 
v5.5.35, v5.5.36, v5.5.37, v5.5.39, v5.5.40, v5.5.41, v5.5.43, v5.5.44, 
v5.6.0, v5.6.1, v5.6.10, v5.6.11, v5.6.12, v5.6.13, v5.6.14, v5.6.15, 
v5.6.16, v5.6.17, v5.6.19, v5.6.2, v5.6.20, v5.6.21, v5.6.22, v5.6.23, 
v5.6.24, v5.6.25,
v5.6.26, v5.6.27, v5.6.28, v5.6.29, v5.6.3, v5.6.30, v5.6.31, v5.6.32, 
v5.6.33, v5.6.34, v5.6.35, v5.6.36, v5.6.37, v5.6.38, v5.6.39, v5.6.4, 
v5.6.5, v5.6.6, v5.6.7, v5.6.8, v5.6.9, v5.7.0, v5.7.1, v5.7.10, v5.7.11, 
v5.7.15, v5.7.2, v5.7.3, v5.7.4, v5.7.5, v5.7.6, v5.7.7, v5.7.8, v5.7.9].
- don't install illuminate/support 5.7.17|don't install laravel/framework v5.4.36
- don't install illuminate/support 5.7.18|don't install laravel/framework v5.4.36
- don't install illuminate/support 5.7.19|don't install laravel/framework v5.4.36
- don't install illuminate/support v5.5.0|don't install laravel/framework v5.4.36
- don't install illuminate/support v5.5.16|don't install laravel/framework v5.4.36
- don't install illuminate/support v5.5.17|don't install laravel/framework v5.4.36
- don't install illuminate/support v5.5.2|don't install laravel/framework v5.4.36
- don't install illuminate/support v5.7.8|don't install laravel/framework v5.4.36
- don't install illuminate/support v5.7.9|don't install laravel/framework v5.4.36
- Installation request for laravel/framework (locked at v5.4.36, required as 5.4.*) -> satisfiable by laravel/framework[v5.4.36].


Installation failed, reverting ./composer.json to its original content.

如果有人对这个问题有解决方案或替代方法来产生PDF，请与我分享

我曾经将php 7.0.1尝试将其更新为7.2.13，但仍然存在相同的问题

编辑1：尝试composer update仍然是相同的问题

Answer 1

我已使用此命令成功为我安装

composer require barryvdh/laravel-dompdf:0.8.2 

注意：我使用的是laravel 5.4，而0.8.2是支持5.4的dompdf的最新版本