Why does an error appear when installing an extension via composer?

Question

PHP

Good afternoon! I'm trying to install an extension through composer, but I keep getting an error...

- lapaygroup/russianpost[0.4.5, ..., 0.4.12] require guzzlehttp/guzzle ^6.3 -> 
found guzzlehttp/guzzle[6.3.0, ..., 6.5.5] but it conflicts with your root composer.json require (^7.3).

As I understand it, the application requires guzzlehttp/guzzle versions from 6.3.0 to 6.5.5, and I have 7.3 installed... But by clicking on the lapaygroup/RussianPost link, you can see that the extension works on version 7.3

. There is also a second error, meaning which I don't understand at all.

- Root composer.json requires lapaygroup/russianpost ^0.4.5 ->
satisfiable by lapaygroup/russianpost[0.4.5, ..., 0.4.12].

Please help. Thank you.

Answer 1

lapaygroup/russianpost[0.4.5, ..., 0.4.12]
In the tag https://github.com/lapaygroup/RussianPost/blob/0.4... "guzzlehttp/guzzle": "^6.3",
Choose another version Russian Post package